{"id":7716,"date":"2026-05-19T15:27:45","date_gmt":"2026-05-19T07:27:45","guid":{"rendered":"https:\/\/issrsensor.com\/?p=7716"},"modified":"2026-05-19T16:52:34","modified_gmt":"2026-05-19T08:52:34","slug":"ultrasonic-double-sheet-detection-applications","status":"publish","type":"post","link":"https:\/\/issrsensor.com\/it\/ultrasonic-double-sheet-detection-applications\/","title":{"rendered":"Applicazione del rilevamento a ultrasuoni del doppio foglio nelle batterie al litio, nel fotovoltaico, nell'imballaggio e nella stampa"},"content":{"rendered":"<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ebf6f64\" data-block-id=\"ebf6f64\"><style>.stk-ebf6f64 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In modern high-speed, precision industrial production lines, such as those for lithium battery manufacturing, photovoltaic panel production, high-end packaging processing, and high-speed printing, even minor production deviations can accumulate into significant losses. Among these, &#8220;double sheet feeding&#8221;\u2014where the production line incorrectly identifies two or more sheets of material as one\u2014has become a pervasive and hidden &#8220;invisible killer.&#8221; This phenomenon not only leads to costly material waste but can also damage expensive production equipment, cause production disruptions, and severely impact the quality and yield of final products.<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>In actual engineering practice, the cost of double sheet feeding often exceeds expectations:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Soaring Material and Downtime Costs:<\/strong> Double feeding means raw materials are consumed at double or multiple rates. Furthermore, troubleshooting and resolving double sheet issues typically involve prolonged production line downtime and complex recalibration processes, directly increasing operational costs.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Process Disruption and Product Quality Risks:<\/strong> When double sheets enter core processing units such as rolling, cutting, lamination, winding, or printing, a series of cascading problems can arise. These include abnormal thickness, misalignment, poor adhesion or lamination, ultimately leading to product non-conformity.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Severe Production Cycle Obstruction:<\/strong> Once double sheets penetrate early detection points, the error tolerance of subsequent stations rapidly diminishes. Handling double sheet failures usually requires manual intervention, including removing stacked materials, correcting deviations, resetting feeding parameters, etc., directly impacting production cycles and order delivery.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a184239\" data-block-id=\"a184239\"><style>.stk-a184239 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Therefore, establishing an efficient and reliable double sheet detection mechanism is crucial for ensuring the continuity, stability, and product consistency of the production process. This article will delve into the &#8220;ultrasonic double sheet detection&#8221; technology, covering its working principle, unique advantages, typical application paths in four major industrial fields (lithium battery, photovoltaic, packaging, and printing), and key considerations for engineering implementation, aiming to help enterprises effectively prevent risks and improve quality control.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3018ab2\" id=\"1-why-is-double-sheet-detection-so-critical-the-quality-safety-valve-of-industrial-production\" data-block-id=\"3018ab2\"><h2 class=\"stk-block-heading__text\">1. Why is Double Sheet Detection So Critical? The &#8220;Quality Safety Valve&#8221; of Industrial Production<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-27844eb\" data-block-id=\"27844eb\"><style>.stk-27844eb .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-7718\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Double-Sheet-Detection.webp\" width=\"750\" height=\"405\" alt=\"Rilevamento del doppio foglio\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Double-Sheet-Detection.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Double-Sheet-Detection-300x162.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Double-Sheet-Detection-18x10.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1ea8924\" data-block-id=\"1ea8924\"><style>.stk-1ea8924 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In modern industrial production, especially when processing thin, soft, and easily adhesive materials (such as lithium battery electrodes, photovoltaic silicon wafers, various films, and paper), double sheets, missing sheets, or incorrect material feeding are difficult to completely avoid. The harm of these seemingly occasional problems far exceeds intuitive imagination, mainly manifested in the following aspects:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0ddc43e\" id=\"1-1-high-material-loss-and-waste\" data-block-id=\"0ddc43e\"><h3 class=\"stk-block-heading__text\">1.1 High Material Loss and Waste<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-fa0586b\" data-block-id=\"fa0586b\"><style>.stk-fa0586b .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Double sheet feeding means that double or even multiple amounts of material are sent to subsequent processes. For &#8220;high-value or high-volume&#8221; materials such as lithium battery electrode sheets, separators, photovoltaic silicon wafers, and various printing papers, any instance of double feeding will directly lead to a surge in unit production costs and significantly increase the cost of waste and rework.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2790a13\" id=\"1-2-equipment-damage-risk-and-high-downtime-costs\" data-block-id=\"2790a13\"><h3 class=\"stk-block-heading__text\">1.2 Equipment Damage Risk and High Downtime Costs<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b5c8c84\" data-block-id=\"b5c8c84\"><style>.stk-b5c8c84 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">When two or more sheets of material simultaneously enter rolling, cutting, lamination, or printing units, the probability of mechanical jamming significantly increases. This can not only cause wear and tear on rollers and guide rollers but even lead to abnormal mechanical structures or damage to critical components. In the printing industry, severe paper jams induced by double sheets can directly damage the printing system and result in prolonged downtime for troubleshooting and repairs.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-05689c1\" id=\"1-3-sharp-decline-in-production-efficiency\" data-block-id=\"05689c1\"><h3 class=\"stk-block-heading__text\">1.3 Sharp Decline in Production Efficiency<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-6149220\" data-block-id=\"6149220\"><style>.stk-6149220 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Double sheet events usually trigger manual re-inspection or emergency shutdowns. Resuming production is not as simple as just removing jammed or stacked materials; it may also involve deviation correction, resetting feeding parameters, alarm linkage reset, and a series of other complex operations. These seriously affect the production cycle and delay order delivery.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5653912\" id=\"1-4-product-quality-degradation-and-yield-reduction\" data-block-id=\"5653912\"><h3 class=\"stk-block-heading__text\">1.4 Product Quality Degradation and Yield Reduction<\/h3><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>Double sheets can lead to material thickness and layer counts that do not meet process requirements, thereby causing serious quality issues:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Lithium Battery:<\/strong> Misaligned layers can lead to abnormal cell winding\/stacking, severely affecting the consistency and safety of the cell.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Photovoltaic:<\/strong> Double sheets during stacking or before lamination can cause defects in the laminated structure, ultimately reducing the power generation efficiency and yield of photovoltaic modules.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Packaging\/Printing:<\/strong> Misfeeds, double-pasting, or incorrect binding can create traceable quality problems, amplifying rework risks and potentially leading to customer complaints.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-bc5e120\" id=\"1-5-potential-safety-hazards\" data-block-id=\"bc5e120\"><h3 class=\"stk-block-heading__text\">1.5 Potential Safety Hazards<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c064594\" data-block-id=\"c064594\"><style>.stk-c064594 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">High-speed production equipment operating with abnormal feeding may experience higher structural loads and operational instability. Reliable double sheet detection can effectively reduce the probability of &#8220;abnormal materials entering subsequent machinery,&#8221; thereby improving the operational safety of the entire production line at a systemic level.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-efccdd8\" data-block-id=\"efccdd8\"><style>.stk-efccdd8 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\"><strong>Conclusione: <\/strong>Double sheet detection is by no means an &#8220;option,&#8221; but an indispensable &#8220;quality safety valve&#8221; for high-speed, high-value manufacturing fields. The higher the reliability of detection, the more effectively downtime can be reduced, waste rates lowered, and rework costs minimized. This shifts cost control from &#8220;post-event processing&#8221; to &#8220;pre-event prevention,&#8221; enabling smarter and more efficient production management.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-d095f17\" id=\"2-principle-and-unique-advantages-of-ultrasonic-double-sheet-detection\" data-block-id=\"d095f17\"><h2 class=\"stk-block-heading__text\">2. Principle and Unique Advantages of Ultrasonic Double Sheet Detection<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-3ea5fd1\" data-block-id=\"3ea5fd1\"><style>.stk-3ea5fd1 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">The fundamental reason why ultrasonic double sheet detection technology has found widespread application in various industrial fields, such as lithium battery, photovoltaic, packaging, and printing, is its ability to convert the material state of &#8220;single sheet, double sheet, or no material&#8221; into precisely measurable acoustic response differences. Furthermore, it can perform stable identification and judgment under non-contact conditions.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-20b9011\" id=\"2-1-working-principle-precisely-distinguishing-material-states-through-differences-in-acoustic-wave-penetration-attenuation\" data-block-id=\"20b9011\"><h3 class=\"stk-block-heading__text\">2.1 Working Principle: Precisely Distinguishing Material States Through Differences in Acoustic Wave Penetration Attenuation<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ad02c5d\" data-block-id=\"ad02c5d\"><style>.stk-ad02c5d .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">An <a href=\"https:\/\/issrsensor.com\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\" type=\"link\" id=\"https:\/\/issrsensor.com\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\">sensore a ultrasuoni a doppia lastra<\/a> typically consists of a transmitting unit, a receiving unit, and a signal processing circuit. The transmitting and receiving units are usually installed on opposite sides of the material to be detected, forming a through-beam or transmissive layout. Its working mechanism is as follows:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-97257bd\" data-block-id=\"97257bd\"><style>.stk-97257bd .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-7720\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Principle-of-Ultrasonic-Double-Sheet-Detection.webp\" width=\"750\" height=\"425\" alt=\"Principle of Ultrasonic Double-Sheet Detection\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Principle-of-Ultrasonic-Double-Sheet-Detection.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Principle-of-Ultrasonic-Double-Sheet-Detection-300x170.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Principle-of-Ultrasonic-Double-Sheet-Detection-18x10.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <ol style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Emit Pulse:<\/strong> The transmitting unit generates and emits high-frequency ultrasonic pulses.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Penetration and Energy Attenuation:<\/strong> Ultrasonic waves penetrate the material in the detected area. When sound waves pass through a material, their energy attenuates due to various mechanisms:\n            <ul style=\"padding-left: 20px; margin-top: 0.5em;\">\n                <li style=\"margin-bottom: 0.5em;\"><strong>Absorption:<\/strong> Part of the sound wave energy is converted into heat inside the material, which is an inherent characteristic of the material&#8217;s internal friction and molecular motion.<\/li>\n                <li style=\"margin-bottom: 0.5em;\"><strong>Scattering:<\/strong> When sound waves encounter inhomogeneities within the material, energy is scattered in different directions, leading to a reduction in the intensity of the forward-propagating sound waves.<\/li>\n                <li style=\"margin-bottom: 0.5em;\"><strong>Reflection &#038; Refraction at Interfaces:<\/strong> When sound waves travel from one medium (e.g., air) into another (e.g., paper, film, electrode sheet), or from one medium to another (e.g., a tiny air gap between material 1 and material 2), reflection and refraction occur at the interface. This is a critical mechanism for distinguishing between single and double sheet states: when sound waves encounter an interface with a large acoustic impedance difference, most of the energy is reflected, and only a small portion continues to penetrate.<\/li>\n            <\/ul>\n        <\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Receive Signal:<\/strong> The receiving unit captures the ultrasonic signal that has penetrated the material.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Signal Analysis:<\/strong> The system primarily judges the current material state by measuring the attenuation of the received ultrasonic energy relative to the transmitted energy and other factors.<\/li>\n    <\/ol>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-99861ca\" data-block-id=\"99861ca\"><style>.stk-99861ca .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Based on engineering practice, key discrimination points can be summarized into three categories:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-04e8ec1\" data-block-id=\"04e8ec1\"><style>.stk-04e8ec1 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-7719\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Examples-of-Ultrasonic-Double-Sheet-Detection-Receiver-Signals-for-Varying-Thicknesses-and-Sheet-Counts.webp\" width=\"750\" height=\"450\" alt=\"Examples of Ultrasonic Double-Sheet Detection Receiver Signals for Varying Thicknesses and Sheet Counts\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Examples-of-Ultrasonic-Double-Sheet-Detection-Receiver-Signals-for-Varying-Thicknesses-and-Sheet-Counts.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Examples-of-Ultrasonic-Double-Sheet-Detection-Receiver-Signals-for-Varying-Thicknesses-and-Sheet-Counts-300x180.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Examples-of-Ultrasonic-Double-Sheet-Detection-Receiver-Signals-for-Varying-Thicknesses-and-Sheet-Counts-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>No Material:<\/strong> When no material passes through the detection area, the ultrasonic energy path from transmitter to receiver is almost unobstructed, signal attenuation is minimal, and the received signal strength is highest. The sensor can then determine the state as &#8220;no material.&#8221;<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Single Sheet Material:<\/strong> When only one sheet of material (e.g., a single layer of film, a sheet of paper, or an electrode sheet) passes through the detection area, ultrasonic waves penetrate this material layer, causing a certain degree of energy attenuation (primarily from internal material absorption and scattering, as well as reflection at the material-air interface). The signal strength and time-domain characteristics captured by the receiving end will correspond to the &#8220;single sheet&#8221; state.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Double Sheet Material (Two Layers Stacked):<\/strong> When two sheets of material overlap and pass through, ultrasonic waves need to penetrate two layers of material. Crucially, the sound waves will undergo additional reflection and refraction at the interface between the first and second materials (even if it&#8217;s a tiny air gap or imperfectly aligned surfaces), leading to significant energy loss. This means that ultrasonic waves need to pass through at least four interfaces (air-material 1, the gap\/interface between material 1-material 2, material 2-air), and each interface reflection significantly weakens the penetrating energy. Therefore, the signal strength captured by the receiving end will be significantly lower than when penetrating a single sheet. The system precisely identifies the &#8220;double sheet&#8221; state based on this significant difference in energy attenuation.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b5acfdb\" data-block-id=\"b5acfdb\"><style>.stk-b5acfdb .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\"><strong>Important Engineering Implication: <\/strong>The core advantage of ultrasonic double sheet detection is that it does not rely on &#8220;seeing color or texture&#8221; but rather on &#8220;differences in acoustic attenuation after sound waves penetrate the material.&#8221; This means it is particularly suitable for material types and working conditions where traditional optical detection solutions struggle to achieve stable identification, such as transparent, translucent, highly reflective, or materials with complex printed patterns. When the number of material layers increases (e.g., double or multiple layers), due to the absorption and scattering of sound waves within the material and multiple reflections at the inter-layer interfaces, the overall sound wave attenuation becomes more pronounced and discernible. This is the important physical basis for ultrasonic technology to reliably identify multi-layer states of thin materials (such as films, paper, electrode sheets).<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0f3d280\" id=\"2-2-unique-advantages-of-ultrasonic-double-sheet-detection-usability-and-stability-for-engineering\" data-block-id=\"0f3d280\"><h3 class=\"stk-block-heading__text\">2.2 Unique Advantages of Ultrasonic Double Sheet Detection: &#8220;Usability&#8221; and &#8220;Stability&#8221; for Engineering<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-10f205e\" data-block-id=\"10f205e\"><style>.stk-10f205e .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In demanding industrial application environments, sensing technology not only requires the ability to &#8220;measure&#8221; but also demands characteristics such as &#8220;long-term stability, low parameter adjustment cost, and insensitivity to working condition disturbances.&#8221; Ultrasonic double sheet detection often exhibits the following core advantages in engineering practice:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-8fc7fd9\" id=\"2-2-1-non-contact-detection-effectively-reduces-contamination-and-damage-risks\" data-block-id=\"8fc7fd9\"><h4 class=\"stk-block-heading__text\">2.2.1 Non-contact Detection: Effectively Reduces Contamination and Damage Risks<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-76fb234\" data-block-id=\"76fb234\"><style>.stk-76fb234 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Ultrasonic sensors do not require mechanical contact with the material being detected during operation, fundamentally avoiding the risk of scratching, indentation, or contamination of the material surface. This is a crucial advantage for industries processing thin films, high-value paper, precision sheets, and other easily damaged materials.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-caab600\" id=\"2-2-2-insensitive-to-color-printed-patterns-and-glossy-surfaces-completely-solves-the-problem-of-visual-interference\" data-block-id=\"caab600\"><h4 class=\"stk-block-heading__text\">2.2.2 Insensitive to Color, Printed Patterns, and Glossy Surfaces: Completely Solves the Problem of &#8220;Visual Interference&#8221;<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e2c2b40\" data-block-id=\"e2c2b40\"><style>.stk-e2c2b40 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Engineering data and practical experience clearly indicate that ultrasonic double sheet detection technology is unaffected by material color, printed patterns, surface coatings, or gloss. This means that even if labels, instructions, or printed paper have different colors, complex patterns, or reflective surfaces, ultrasonic sensors can still stably and reliably determine the single\/double sheet state, significantly reducing misjudgments and parameter adjustment workloads caused by changes in visual characteristics.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-efc65fd\" id=\"2-2-3-wide-range-of-applicable-materials-covers-diverse-needs-from-paper-to-thin-metal-sheets-to-plastics-to-foils\" data-block-id=\"efc65fd\"><h4 class=\"stk-block-heading__text\">2.2.3 Wide Range of Applicable Materials: Covers Diverse Needs from &#8220;Paper to Thin Metal Sheets to Plastics to Foils&#8221;<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-38ca1f5\" data-block-id=\"38ca1f5\"><style>.stk-38ca1f5 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Ultrasonic double sheet detection technology is suitable for various materials, including but not limited to paper, thin metal sheets, plastic films, and various foils. For factories with multi-category production, this means that the same set of detection logic and equipment can be more easily reused or quickly migrated between different product lines, greatly improving investment efficiency and production line flexibility.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1fa8b50\" id=\"2-2-4-high-speed-production-line-friendly-fast-response-supports-precise-linkage-shutdown-alarm\" data-block-id=\"1fa8b50\"><h4 class=\"stk-block-heading__text\">2.2.4 High-Speed Production Line Friendly: Fast Response, Supports Precise Linkage Shutdown\/Alarm<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-3861d5d\" data-block-id=\"3861d5d\"><style>.stk-3861d5d .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">One of the significant engineering advantages of ultrasonic double sheet detection is its extremely fast response speed, making it perfectly suited for high-speed production lines. It can quickly provide detection results and act as a critical linkage control signal to promptly trigger alarms or emergency shutdowns. In processes with extremely high cycle requirements, such as printing, packaging, and lithium battery manufacturing, this fast closed-loop of &#8220;detection-decision-linkage&#8221; can effectively reduce the probability of double sheets penetrating to critical downstream stations, minimizing losses to the greatest extent.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f440c1d\" id=\"2-2-5-suited-for-thin-materials-and-high-precision-scenarios-small-blind-zones-and-fine-acoustic-beams-support-fine-detection\" data-block-id=\"f440c1d\"><h4 class=\"stk-block-heading__text\">2.2.5 Suited for Thin Materials and High-Precision Scenarios: Small Blind Zones and Fine Acoustic Beams Support Fine Detection<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e14e3d3\" data-block-id=\"e14e3d3\"><style>.stk-e14e3d3 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">For example, ISSRSensor <a href=\"https:\/\/issrsensor.com\/products\/issr-ultrasonic-double-sheet-sensor-multi-material-detection-for-automation\/\" type=\"link\" id=\"https:\/\/issrsensor.com\/products\/issr-ultrasonic-double-sheet-sensor-multi-material-detection-for-automation\/\">double sheet sensors<\/a> have extremely small blind zones (down to approximately 20 mm) and finer acoustic beam characteristics. This technical advantage enables them to meet the high-precision detection requirements for double-layer film materials in lithium battery production processes. These engineering parameters provide a solid physical basis for understanding why ultrasonic technology is particularly suitable for thin materials, small sizes, and high-precision detection scenarios.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-94e6a64\" id=\"3-typical-application-scenarios-in-four-major-industries-risk-interception-and-efficiency-improvement\" data-block-id=\"94e6a64\"><h2 class=\"stk-block-heading__text\">3. Typical Application Scenarios in Four Major Industries: Risk Interception and Efficiency Improvement<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-6d2ac0e\" data-block-id=\"6d2ac0e\"><style>.stk-6d2ac0e .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">The true value of ultrasonic double sheet detection technology is not merely its basic function of &#8220;identifying single\/double sheets,&#8221; but rather its ability to act as a critical risk interception point in the production line. By making precise judgments before materials enter high-value, sensitive stations, and combining with linkage control (such as alarms, shutdowns, or release control), potential fault costs are moved upstream, significantly improving production safety and efficiency.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ad3f5c2\" id=\"3-1-lithium-battery-industry-precise-protection-of-electrode-sheets-and-separators\" data-block-id=\"ad3f5c2\"><h3 class=\"stk-block-heading__text\">3.1 Lithium Battery Industry: Precise Protection of Electrode Sheets and Separators<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-2f36f46\" data-block-id=\"2f36f46\"><style>.stk-2f36f46 .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-7721\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-for-Electrode-Sheets.webp\" width=\"750\" height=\"520\" alt=\"Ultrasonic Double-Sheet Detection Applications for Electrode Sheets\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-for-Electrode-Sheets.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-for-Electrode-Sheets-300x208.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-for-Electrode-Sheets-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8b5a7d4\" data-block-id=\"8b5a7d4\"><style>.stk-8b5a7d4 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In the lithium battery manufacturing process, double sheet detection typically revolves around the process chain of highly sensitive materials like electrode sheets and separators, acting as a core link in ensuring cell quality and safety:<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Before Electrode Sheet Handling, Alignment, Stacking, or Winding:<\/strong> Ensuring the single sheet state of materials before these critical forming processes is paramount.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Separator (Film) Feeding and Stacking:<\/strong> The consistency of single-layer separators directly affects battery performance.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Risk Interception Before Winding or Stacking Forms the Core Cell Structure:<\/strong> This is the last line of defense to prevent defects from spreading into the cell.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f644b39\" data-block-id=\"f644b39\"><style>.stk-f644b39 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">These materials generally possess the engineering characteristics of being &#8220;thin, light, and easily adhesive\/stacked.&#8221; Therefore, &#8220;double sheet or missing sheet&#8221; phenomena are more likely to occur and can be amplified into severe quality or safety risks in subsequent processes.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-e077f2c\" id=\"typical-scenario-a-single-double-sheet-discrimination-after-suction-nozzle-handling-before-handling-alignment-stacking\" data-block-id=\"e077f2c\"><h4 class=\"stk-block-heading__text\">Typical Scenario A: Single\/Double Sheet Discrimination After Suction Nozzle Handling (Before Handling-Alignment-Stacking)<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c883a93\" data-block-id=\"c883a93\"><style>.stk-c883a93 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">A common process on lithium battery production lines is: suction nozzle picks up material \u2192 moves to alignment\/positioning table \u2192 enters stacking or winding process. Introducing ultrasonic double sheet detection at this stage allows for precise identification of the &#8220;double sheet\/single sheet&#8221; state before the material enters critical forming stations. Once a double sheet is detected, the system can immediately trigger an alarm linkage (e.g., stop subsequent actions, initiate an anomaly handling process), effectively preventing double electrode sheets from being &#8220;stacked into&#8221; the cell structure, thereby eliminating quality hazards at the source.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-61fe654\" data-block-id=\"61fe654\"><p class=\"stk-block-text__text\"><strong>\u2022\tEngineering Significance: <\/strong>Minimizes the probability of &#8220;incorrect material entering the forming structure,&#8221; rather than discovering problems during the winding or stacking stage, significantly reducing rework and scrap costs.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2d1ef15\" id=\"typical-scenario-b-quality-interception-before-stacking-electrode-sheet-separator-feeding-consistency\" data-block-id=\"2d1ef15\"><h4 class=\"stk-block-heading__text\">Typical Scenario B: Quality Interception Before Stacking (Electrode Sheet\/Separator Feeding Consistency)<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-924183e\" data-block-id=\"924183e\"><style>.stk-924183e .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">If double sheets occur before electrode sheets and separators enter the stacking process, it will lead to a series of cascading reactions such as disordered inter-layer structures and inconsistent thickness, directly affecting cell performance. Ultrasonic double sheet detection can be used at critical feeding points for single\/double sheet confirmation, significantly reducing rework and scrap caused by overlapping.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-61cbf03\" id=\"typical-scenario-c-ultimate-protection-in-the-link-before-and-after-winding-machine-stacking-machine\" data-block-id=\"61cbf03\"><h4 class=\"stk-block-heading__text\">Typical Scenario C: Ultimate Protection in the Link Before and After Winding Machine\/Stacking Machine<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f76b77a\" data-block-id=\"f76b77a\"><style>.stk-f76b77a .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Before winding or stacking forms the cell structure, ultrasonic double sheet detection can serve as the &#8220;last line of entry protection.&#8221; Once a double sheet (or multi-layer anomaly) is identified, the system will link to shut down or block downstream actions, effectively preventing structural defects from spreading into the cell and fatally impacting product quality.<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p><strong>Why is Ultrasonic Technology More &#8220;Engineering Friendly&#8221; in the Lithium Battery Industry?<\/strong><\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Non-contact Detection:<\/strong> Avoids mechanical damage or contamination risks to the film\/electrode sheet surface, which is crucial for lithium battery production environments pursuing extreme cleanliness.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Suitable for Thin Materials and High-Precision Scenarios:<\/strong> For example, ISSRSensor&#8217;s M12 <a href=\"https:\/\/issrsensor.com\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\" target=\"_blank\">high-precision ultrasonic double sheet detection sensor<\/a> (300kHz) is specifically designed to identify double-layer states of extremely thin materials (such as lithium battery electrode sheets and separators). It can provide precise and stable judgments in harsh industrial environments, effectively applied in double-layer material detection in lithium battery production processes, ensuring refinement and reliability of production.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Stable Identification of Material Layer Differences:<\/strong> The key lies in the difference in acoustic wave penetration attenuation caused by material stacking, rather than easily interfered visual characteristics, ensuring stable operation even in complex environments.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-a0890a7\" id=\"3-2-photovoltaic-industry-precise-control-of-silicon-wafers-and-lamination-materials\" data-block-id=\"a0890a7\"><h3 class=\"stk-block-heading__text\">3.2 Photovoltaic Industry: Precise Control of Silicon Wafers and Lamination Materials<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-980099e\" data-block-id=\"980099e\"><style>.stk-980099e .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-7723\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Photovoltaic-Industry.webp\" width=\"750\" height=\"457\" alt=\"Ultrasonic Double-Sheet Detection Applications in the Photovoltaic Industry\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Photovoltaic-Industry.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Photovoltaic-Industry-300x183.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Photovoltaic-Industry-18x12.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>Photovoltaic manufacturing also has extremely high requirements for &#8220;single sheet feeding,&#8221; but its focus is often more on:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Silicon Wafer Single Sheet Status Confirmation:<\/strong> To prevent overlapping silicon wafers from causing abnormal lamination or stacking structures.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Control of Material Layer Count During Stacking\/Lamination:<\/strong> To ensure materials enter according to the expected layer count, guaranteeing the integrity of the module structure.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Interception of &#8220;Double Sheet Risk&#8221; Due to Equipment Failure or Incomplete Separation:<\/strong> To prevent double sheet issues caused by mechanical anomalies.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6d50689\" id=\"typical-scenario-a-double-sheet-risk-control-due-to-incomplete-silicon-wafer-separation\" data-block-id=\"6d50689\"><h4 class=\"stk-block-heading__text\">Typical Scenario A: Double Sheet Risk Control Due to Incomplete Silicon Wafer Separation<\/h4><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>In photovoltaic panel stacking or lamination processes, if silicon wafers are not completely separated, or if &#8220;double sheets&#8221; occur due to abnormal equipment operation, it will directly affect the subsequent lamination quality and final yield. Ultrasonic double sheet detection can be used for single sheet confirmation before silicon wafers enter stacking\/lamination:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Identify Abnormal Overlapping:<\/strong> Precisely judge whether silicon wafers are overlapping.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Block Double Sheets from Entering Subsequent Processes:<\/strong> Intercept defects early in their occurrence.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Intercept Defects Early in the Process Chain:<\/strong> Avoid irreversible quality problems after lamination.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ae26514\" id=\"typical-scenario-b-multi-layer-material-control-during-stacking-lamination-including-roll-to-roll-auxiliary-films\" data-block-id=\"ae26514\"><h4 class=\"stk-block-heading__text\">Typical Scenario B: Multi-layer Material Control During Stacking\/Lamination (Including Roll-to-Roll\/Auxiliary Films)<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d96652c\" data-block-id=\"d96652c\"><style>.stk-d96652c .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In addition to silicon wafers, photovoltaic processes also involve various stacking materials and auxiliary films. Ultrasonic single\/double sheet sensors can be used in photovoltaic panel stacking or lamination processes to precisely control the number of layers of various films, meeting strict application requirements.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ba2a3d2\" id=\"typical-scenario-c-reliable-avoidance-of-overlapping-material-operation\" data-block-id=\"ba2a3d2\"><h4 class=\"stk-block-heading__text\">Typical Scenario C: Reliable Avoidance of Overlapping Material Operation<\/h4><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>For applications involving conveying silicon wafers in photovoltaics, ultrasonic double sheet detection can reliably determine whether silicon wafers are single sheets, thereby avoiding the operation of overlapping materials and significantly reducing quality fluctuations and downtime risks in subsequent processes.<\/p>\n    \n    <p><strong>Why is Ultrasonic Technology Stably Effective in the Photovoltaic Industry?<\/strong><\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Material Characteristics Independent of Color\/Gloss:<\/strong> Photovoltaic materials (such as silicon wafers, back panels, or thin-film modules) may be reflective or have visual variations, which can easily affect optical solutions; ultrasonic technology focuses more on identifying &#8220;layer count\/acoustic attenuation differences,&#8221; avoiding visual interference.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Engineering Adaptation for Thin\/Easily Adhesive Materials:<\/strong> Photovoltaic-related materials are usually thin and prone to stacking anomalies. The physical logic of ultrasonic double-layer detection naturally matches these risks, providing a highly reliable solution.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-08a9098\" id=\"3-3-packaging-industry-error-free-handling-of-labels-instructions-and-packaging-materials\" data-block-id=\"08a9098\"><h3 class=\"stk-block-heading__text\">3.3 Packaging Industry: Error-Free Handling of Labels, Instructions, and Packaging Materials<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image has-text-align-center stk-block stk-317cb8c\" data-block-id=\"317cb8c\"><style>.stk-317cb8c .stk-img-wrapper{width:100% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-7722\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Packaging-Industry.webp\" width=\"750\" height=\"375\" alt=\"Ultrasonic Double-Sheet Detection Applications in the Packaging Industry\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Packaging-Industry.webp 750w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Packaging-Industry-300x150.webp 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2026\/05\/Ultrasonic-Double-Sheet-Detection-Applications-in-the-Packaging-Industry-18x9.webp 18w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/span><\/figure><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>Double sheet detection in the packaging industry typically revolves around core pain points such as missing labels, mislabels, and material jams. Typical application materials include:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\">Labels, product instructions<\/li>\n        <li style=\"margin-bottom: 1em;\">Cartons, packaging bags<\/li>\n        <li style=\"margin-bottom: 1em;\">Materials related to automatic stapling<\/li>\n        <li style=\"margin-bottom: 1em;\">Materials fed into inserting machines, etc.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-221f179\" data-block-id=\"221f179\"><style>.stk-221f179 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In engineering practice, ultrasonic double sheet detection is explicitly applied in scenarios such as label detection and joint detection in the packaging industry. Due to its insensitivity to printing, color, and glossy surfaces, and its fast response, it has become an ideal choice for high-speed packaging lines.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-27290f3\" id=\"typical-scenario-a-double-sheet-discrimination-before-label-instruction-feeding-and-application\" data-block-id=\"27290f3\"><h4 class=\"stk-block-heading__text\">Typical Scenario A: Double Sheet Discrimination Before Label\/Instruction Feeding and Application<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9b27218\" data-block-id=\"9b27218\"><style>.stk-9b27218 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">A common pain point on packaging lines is when the system incorrectly identifies two labels or multiple instructions as one, leading to abnormal application, missing packaging content, or incorrect packaging. Ultrasonic double sheet detection can accurately identify single sheet\/double sheet\/no material states, intercepting anomalies before the &#8220;application\/feeding&#8221; action occurs, ensuring packaging accuracy.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-e7e2a40\" id=\"typical-scenario-b-avoiding-material-jams-and-reducing-manual-re-inspection\" data-block-id=\"e7e2a40\"><h4 class=\"stk-block-heading__text\">Typical Scenario B: Avoiding Material Jams and Reducing Manual Re-inspection<\/h4><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>In automated packaging equipment, double or multiple sheets of material jamming on the conveying path can cause equipment downtime for troubleshooting, seriously affecting production efficiency. By detecting abnormal materials early with ultrasonic double sheet detection, it can significantly reduce:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\">The probability of material jams, ensuring smooth equipment operation.<\/li>\n        <li style=\"margin-bottom: 1em;\">Manual re-inspection and rework, saving labor costs.<\/li>\n        <li style=\"margin-bottom: 1em;\">Larger-scale downtime due to anomaly spread, maintaining production continuity.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9c8eb32\" id=\"typical-scenario-c-joint-detection-related-to-rolls-joints-process-connections\" data-block-id=\"9c8eb32\"><h4 class=\"stk-block-heading__text\">Typical Scenario C: Joint Detection (Related to Rolls\/Joints\/Process Connections)<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-06ac487\" data-block-id=\"06ac487\"><style>.stk-06ac487 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">The packaging industry also involves complex joint detection requirements, such as joints and splicing points of roll materials. Ultrasonic technology can be used in joint detection scenarios in the packaging industry, demonstrating its strong adaptability in judging &#8220;connection correctness&#8221; or &#8220;whether abnormal multi-layer states exist.&#8221;<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p><strong>Summary of &#8220;Engineering Advantages&#8221; in Packaging Scenarios:<\/strong><\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Insensitive to Printing, Color, and Glossy Surfaces:<\/strong> This means that the same set of detection solutions requires less parameter adjustment and is easier to deploy when spanning different labels and paper coating systems.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Integrated Discrimination of Single\/Double\/No Material:<\/strong> Helps build complete feeding control logic (e.g., material shortage alarms, double sheet alarms, abnormal shutdowns), improving the intelligence level of the system.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1620195\" id=\"3-4-printing-industry-precise-paper-feeding-control-and-paper-jam-protection\" data-block-id=\"1620195\"><h3 class=\"stk-block-heading__text\">3.4 Printing Industry: Precise Paper Feeding Control and Paper Jam Protection<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e0d252a\" data-block-id=\"e0d252a\"><style>.stk-e0d252a .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In the printing industry, &#8220;double sheet feeding&#8221; is often considered a high-risk production anomaly: it not only leads to registration or alignment errors but also causes paper path congestion and severe paper jams, which in turn results in equipment downtime, disruption of ink and process windows, and cascading scrap costs. Therefore, double sheet detection in the printing industry often emphasizes two core goals: early detection of anomalies and rapid linkage shutdown protection.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9a2c638\" id=\"typical-scenario-a-detection-in-the-gripping-area-before-entering-the-printing-unit\" data-block-id=\"9a2c638\"><h4 class=\"stk-block-heading__text\">Typical Scenario A: Detection in the &#8220;Gripping Area&#8221; Before Entering the Printing Unit<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c20451e\" data-block-id=\"c20451e\"><style>.stk-c20451e .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Engineering practice shows that ultrasonic double sheet detection in the &#8220;gripping area&#8221; before paper enters the printing unit is an extremely effective strategy. The logic behind this is to set the detection point &#8220;before the paper enters the critical forming\/imaging mechanism,&#8221; thereby enabling immediate action when double or multiple sheets are detected, avoiding double sheets from entering the printing process and causing larger-scale impacts and losses.<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>In this detection structure, the role of the ultrasonic sensor is not to replace the paper feeding mechanism but to provide a reliable &#8220;entry guard&#8221; signal:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Identify Single Sheet:<\/strong> Allows normal paper feeding.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Identify Double\/Multiple Sheets:<\/strong> Immediately blocks downstream actions, triggers alarms or emergency shutdowns.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Identify No Material:<\/strong> Can be used for paper shortage alarms, avoiding equipment idling and misjudgments, saving energy.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0de22d1\" id=\"typical-scenario-b-driven-shutdown-protection-maximizing-reduction-of-paper-jam-damage\" data-block-id=\"0de22d1\"><h4 class=\"stk-block-heading__text\">Typical Scenario B: Driven Shutdown Protection, Maximizing Reduction of Paper Jam Damage<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a072b3f\" data-block-id=\"a072b3f\"><style>.stk-a072b3f .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">When the ultrasonic sensor detects double or multiple sheets, the printing machine can immediately link to execute a shutdown protection strategy. After an anomaly occurs, the system can immediately drive the feeder\/paper transport system to shut down, thereby effectively protecting expensive printing presses from damage and significantly reducing paper waste.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ab1b25f\" id=\"typical-scenario-c-stability-for-different-paper-and-surface-conditions\" data-block-id=\"ab1b25f\"><h4 class=\"stk-block-heading__text\">Typical Scenario C: Stability for Different Paper and Surface Conditions<\/h4><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-2b0156a\" data-block-id=\"2b0156a\"><style>.stk-2b0156a .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Printing companies often need to handle a wide variety of papers with different surface coatings or gloss effects. If the sensing solution is too sensitive to visual characteristics, it will lead to frequent parameter adjustments and an increased rate of misjudgments. The engineering advantage of ultrasonic double sheet detection lies in its insensitivity to printing-related colors\/surface characteristics and its suitability for detecting various materials such as paper, thin metal sheets, and plastics, greatly improving production stability and efficiency.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ff15418\" id=\"4-why-does-ultrasonic-detection-surpass-traditional-methods-and-become-the-preferred-choice\" data-block-id=\"ff15418\"><h2 class=\"stk-block-heading__text\">4. Why Does Ultrasonic Detection Surpass Traditional Methods and Become the Preferred Choice?<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-145959c\" data-block-id=\"145959c\"><style>.stk-145959c .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">When selecting double sheet detection solutions, many factories often face a real dilemma: they need to meet &#8220;reliable identification, low misjudgment rate&#8221; while also considering &#8220;low maintenance costs, multi-material compatibility.&#8221; In this context, the unique advantages of ultrasonic detection become evident\u2014it relies on the acoustic response of the material for judgment, rather than the visual texture or surface reflection characteristics that traditional optical solutions depend on.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-c9e4cc6\" id=\"4-1-more-friendly-to-transparent-translucent-and-visually-difficult-to-identify-materials\" data-block-id=\"c9e4cc6\"><h3 class=\"stk-block-heading__text\">4.1 More Friendly to Transparent, Translucent, and &#8220;Visually Difficult to Identify&#8221; Materials<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9ee2436\" data-block-id=\"9ee2436\"><style>.stk-9ee2436 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">When materials are subject to transmission, reflection, or surface coating interference under optical solutions, the ultrasonic &#8220;sound wave penetration and attenuation difference&#8221; mechanism is more likely to obtain stable and reliable signals. Engineering literature generally describes the applicability of ultrasonic technology to various thin film\/thin material scenarios, including materials with special requirements for double-layer detection.<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p><strong>Core Idea:<\/strong><\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\">When optical detection is sensitive to &#8220;transmission\/reflection\/surface coating&#8221; and easily fails, ultrasonic technology distinguishes layer count or material state by differences in sound wave attenuation after penetrating the material, achieving superior stability and accuracy.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0721bef\" id=\"4-2-insensitive-to-reflection-gloss-and-printed-patterns-significantly-reduces-parameter-adjustment-and-misjudgment\" data-block-id=\"0721bef\"><h3 class=\"stk-block-heading__text\">4.2 Insensitive to Reflection, Gloss, and Printed Patterns: Significantly Reduces Parameter Adjustment and Misjudgment<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ac76b2c\" data-block-id=\"ac76b2c\"><style>.stk-ac76b2c .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Ultrasonic double sheet detection is insensitive to printed patterns, colors, and surface gloss. This means that even if labels, instructions, or printed paper have different colors, complex patterns, or reflective surfaces, ultrasonic sensors can still stably and reliably determine the single\/double sheet state, significantly reducing misjudgments and parameter adjustment workloads caused by changes in visual characteristics.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-d988f5e\" id=\"4-3-suited-for-thin-light-easily-adhesive-materials-detection-logic-more-aligned-with-working-conditions\" data-block-id=\"d988f5e\"><h3 class=\"stk-block-heading__text\">4.3 Suited for &#8220;Thin, Light, Easily Adhesive&#8221; Materials: Detection Logic More Aligned with Working Conditions<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-be8f076\" data-block-id=\"be8f076\"><style>.stk-be8f076 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Many critical materials in the lithium battery and photovoltaic industries have the engineering characteristics of being thin, light, and easily stacked. ISSRSensor&#8217;s double sheet sensor&#8217;s capability in double-layer material detection, along with its small blind zone, high resolution, and fine acoustic beam parameters, enables its effective application in double-layer material detection in lithium battery production processes.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-2622b13\" data-block-id=\"2622b13\"><style>.stk-2622b13 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">In other words: the physical mechanism of ultrasonic double sheet detection naturally aligns with &#8220;acoustic boundary changes and penetration attenuation caused by material stacking.&#8221; It is particularly suitable for processing thin materials and complex application scenarios that require precise differentiation of double-layer\/multi-layer states.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-944dcd4\" id=\"5-engineering-implementation-considerations-for-ultrasonic-double-sheet-detection\" data-block-id=\"944dcd4\"><h2 class=\"stk-block-heading__text\">5. Engineering Implementation Considerations for Ultrasonic Double Sheet Detection<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f18ddab\" data-block-id=\"f18ddab\"><style>.stk-f18ddab .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">To ensure that an ultrasonic double sheet detection system achieves &#8220;stable, usable, and maintainable&#8221; performance on an actual production line, merely selecting high-performance sensors is not enough. The following key factors also need to be comprehensively considered for systematic planning and implementation:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9939057\" id=\"5-1-precise-matching-of-material-thickness-window-with-sensor-blind-zone-detection-distance\" data-block-id=\"9939057\"><h3 class=\"stk-block-heading__text\">5.1 Precise Matching of Material Thickness Window with Sensor Blind Zone\/Detection Distance<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e1e1afe\" data-block-id=\"e1e1afe\"><style>.stk-e1e1afe .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">Different models of ultrasonic sensors have their optimal detection thickness range and effective working distance window. For example, the ISSRSensor M18 <a href=\"https:\/\/issrsensor.com\/products\/issr-ultrasonic-double-sheet-sensor-multi-material-detection-for-automation\/\" type=\"link\" id=\"https:\/\/issrsensor.com\/products\/issr-ultrasonic-double-sheet-sensor-multi-material-detection-for-automation\/\">double sheet detection sensor<\/a> can achieve a small blind zone (approximately 20 mm) and a detection range of up to 60 mm, with a fine acoustic beam, which provides an advantage in specific applications.<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>During engineering implementation, you need to ensure:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Single Sheet Material Thickness:<\/strong> Must precisely fall within the sensor&#8217;s &#8220;single sheet acoustic attenuation characteristic zone.&#8221;<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Double Sheet Material Thickness\/Double Layer State:<\/strong> Must fall within the sensor&#8217;s &#8220;distinguishable double sheet acoustic attenuation characteristic zone.&#8221;<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Distance Between Material and Sensor at Detection Point:<\/strong> The installation height and bracket position must be within the sensor&#8217;s effective working area.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0b2d6d2\" data-block-id=\"0b2d6d2\"><style>.stk-0b2d6d2 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\"><strong>Recommended Engineering Practice:<\/strong> Conduct thorough three-category data collection (single sheet, double sheet, no material) using target material samples on-site, and then perform precise threshold setting and verification to establish a reliable baseline.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-84f0436\" id=\"5-2-production-line-speed-and-response-time-key-to-effective-interception\" data-block-id=\"84f0436\"><h3 class=\"stk-block-heading__text\">5.2 Production Line Speed and Response Time: Key to &#8220;Effective Interception&#8221;<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-60cdbb9\" data-block-id=\"60cdbb9\"><style>.stk-60cdbb9 .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">If the detection point is set too late, or the sensor&#8217;s response and system linkage speed are too slow, even if the sensor can theoretically judge accurately, it may not be able to effectively block double sheets before they enter irreversible downstream stations. Professional manufacturers also emphasize that their products have fast response speeds, making them suitable for high-speed production lines.<\/p><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>In actual implementation, careful verification must be made for:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\">The time required for the material to travel from the detection point to the &#8220;irreversible station&#8221; (e.g., pressing, cutting point).<\/li>\n        <li style=\"margin-bottom: 1em;\">The overall response and execution time of the PLC, relays, and linkage mechanisms.<\/li>\n        <li style=\"margin-bottom: 1em;\">The type of shutdown strategy: Is it &#8220;instantaneous shutdown&#8221; or &#8220;delayed shutdown&#8221;? Is buffer design required for the conveying path?<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3e5b633\" id=\"5-3-installation-position-and-acoustic-beam-path-ensuring-the-signal-goes-the-right-way\" data-block-id=\"3e5b633\"><h3 class=\"stk-block-heading__text\">5.3 Installation Position and Acoustic Beam Path: Ensuring the Signal &#8220;Goes the Right Way&#8221;<\/h3><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>The reliability of an ultrasonic detection system largely depends on the &#8220;unobstructed and stable acoustic beam path.&#8221; Common causes of failure in engineering include:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\">The acoustic beam being obstructed or absorbed by foreign objects after sensor installation.<\/li>\n        <li style=\"margin-bottom: 1em;\">The acoustic beam direction not matching the material movement direction, leading to unstable attenuation characteristics.<\/li>\n        <li style=\"margin-bottom: 1em;\">Acoustic coupling conditions drifting over time due to vibration, loosening, etc.<\/li>\n    <\/ul>\n    \n    <p>Therefore, strict adherence to the following is necessary:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Robust Installation Structure:<\/strong> Ensure the sensor is installed firmly and is not prone to shaking.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Precise Sensor Angle\/Height:<\/strong> Meets process requirements, ensuring the acoustic beam is directly aimed at the detection area.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Avoid Strong Disturbances:<\/strong> Avoid environmental factors near the sensor that could interfere with sound wave propagation, such as strong airflow or significant vibration sources.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-a5aa8db\" id=\"5-4-environmental-factors-and-protection-controlling-dust-powder-working-condition-disturbances\" data-block-id=\"a5aa8db\"><h3 class=\"stk-block-heading__text\">5.4 Environmental Factors and Protection: Controlling Dust\/Powder\/Working Condition Disturbances<\/h3><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>Although ultrasonic technology may be more tolerant of certain on-site interferences compared to optical solutions, the following must still be fully considered:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Dust Accumulation:<\/strong> Long-term accumulated dust may affect the sensor&#8217;s acoustic structure and performance.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Airflow and High-Speed Wind:<\/strong> High-speed airflow can disturb the sound field in the detection area, affecting detection accuracy.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Temperature and Working Condition Fluctuations:<\/strong> Changes in ambient temperature or fluctuations in working conditions may affect the stability of the sensor&#8217;s electronic circuitry.<\/li>\n    <\/ul>\n    \n    <p><strong>Engineering Recommendation:<\/strong> Based on the characteristics of the site environment, select appropriate protective measures (such as dust covers) and formulate regular maintenance strategies (e.g., regular cleaning of sensor housings, calibration of key parameters) to ensure long-term stable operation of the system.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9aac1f3\" id=\"5-5-alarm-and-linkage-mechanism-detection-is-just-the-beginning-closed-loop-is-key\" data-block-id=\"9aac1f3\"><h3 class=\"stk-block-heading__text\">5.5 Alarm and Linkage Mechanism: Detection is Just the Beginning, Closed-Loop is Key<\/h3><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>The successful implementation of an efficient detection system usually forms a complete &#8220;input-discrimination-output-linkage&#8221; closed-loop. Engineering data emphasizes that the purpose of ultrasonic double sheet detection is to protect machines, avoid waste, and is suitable for high-speed production lines.<\/p>\n    \n    <p>You need to clearly design:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\">The precise correspondence between double sheet alarm output and shutdown\/blocking actions.<\/li>\n        <li style=\"margin-bottom: 1em;\">Whether a tiered processing strategy is needed: for example, different response levels such as &#8220;only alarm but not immediate shutdown&#8221; versus &#8220;immediate shutdown.&#8221;<\/li>\n        <li style=\"margin-bottom: 1em;\">Reset conditions: Is manual reset required, or can it be automatically reset? Does automatic reset introduce the risk of incorrect release?<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-a25478e\" id=\"5-6-calibration-and-parameter-setting-establishing-a-repeatable-debugging-process\" data-block-id=\"a25478e\"><h3 class=\"stk-block-heading__text\">5.6 Calibration and Parameter Setting: Establishing a &#8220;Repeatable&#8221; Debugging Process<\/h3><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>To ensure long-term stable operating accuracy of the system, it is recommended to establish a standardized calibration and parameter setting process:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Establish Single Sheet Baseline:<\/strong> Record the acoustic attenuation threshold or characteristic value for single sheet material.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Establish Double Sheet Baseline:<\/strong> Record the acoustic attenuation characteristics or amplitude changes for double sheet material.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Establish No Material Baseline:<\/strong> Record the sound wave propagation characteristics in air.<\/li>\n    <\/ul>\n    \n    <p>And perform timely re-verification and adjustment after the following key events:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>Material Change\/Batch Adjustment:<\/strong> When material thickness or surface conditions change.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Production Line Speed Adjustment.<\/strong><\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Sensor Position Fine-tuning or Reinstallation After Maintenance.<\/strong><\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-07ae873\" id=\"conclusion-ultrasonic-double-sheet-detection-an-ideal-engineering-solution-for-high-speed-thin-material-and-high-value-manufacturing\" data-block-id=\"07ae873\"><h2 class=\"stk-block-heading__text\">Conclusion: Ultrasonic Double Sheet Detection \u2013 An Ideal Engineering Solution for High-Speed, Thin Material, and High-Value Manufacturing<\/h2><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <p>By comprehensively considering the differences in working conditions and common requirements across the four major industrial fields of lithium battery, photovoltaic, packaging, and printing, we can draw a clear engineering conclusion:<\/p>\n    \n    <ul style=\"padding-left: 20px; margin: 0;\">\n        <li style=\"margin-bottom: 1em;\"><strong>The Essence of Double Sheet Detection:<\/strong> It is a risk control strategy that intercepts &#8220;high-cost anomalies&#8221; from entering irreversible stations, serving as a critical defense line for ensuring production continuity and product quality.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Core Advantages of Ultrasonic Double Sheet Detection:<\/strong> This technology utilizes differences in sound wave penetration and attenuation to achieve precise identification of single\/double\/no material. Its insensitivity to printed patterns, colors, and glossy surfaces makes it particularly suitable for various materials such as paper, thin metal sheets, plastics, and metal foils, and it can perfectly adapt to the linkage requirements of high-speed production lines.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>ISSRSensor&#8217;s Technical Support:<\/strong> ISSRSensor&#8217;s excellent capability in double-layer material detection, along with its small blind zone, high resolution, low latency, and fine acoustic beam characteristics, provides a solid engineering basis for understanding the feasibility of ultrasonic technology in thin material, high-precision scenarios.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Value Embodied in the Printing Industry:<\/strong> In the printing industry, ultrasonic detection can be effectively used for detection in the &#8220;gripping area&#8221; of paper feeding and can quickly drive shutdown protection when double sheets are detected, thereby significantly reducing the risk of paper jams and equipment damage.<\/li>\n        <li style=\"margin-bottom: 1em;\"><strong>Key Role in Lithium Battery and Photovoltaic Fields:<\/strong> In the production chains of lithium batteries and photovoltaics, ultrasonic double sheet detection can be used for double-layer\/single-sheet status confirmation of critical materials (such as electrode sheets, separators, silicon wafers), effectively avoiding the negative impact of stacking anomalies on the yield of subsequent processes.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d83af9b\" data-block-id=\"d83af9b\"><style>.stk-d83af9b .stk-block-text__text{line-height:1.5rem !important;}<\/style><p class=\"stk-block-text__text\">As a professional ultrasonic sensor factory, issrsensor.com&#8217;s core value lies in transforming the aforementioned &#8220;feasible detection mechanism&#8221; into reproducible and easy-to-implement industrial engineering solutions. From precise sensor selection, reasonable installation and system linkage, to accurate on-site calibration and long-term stability maintenance, we are committed to helping customers thoroughly intercept double sheet risks at the source in key production lines such as lithium battery, photovoltaic, packaging, and printing, ensuring efficient, stable, and high-quality production.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f305ab4\" id=\"faq\" data-block-id=\"f305ab4\"><h2 class=\"stk-block-heading__text\">FAQ<\/h2><\/div>\n\n\n\n<div style=\"font-family: 'Source Sans 3', sans-serif; line-height: 1.5em;\">\n    <div style=\"margin-bottom: 2em;\">\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>Q1: How are &#8220;Single Sheet\/Double Sheet\/No Material&#8221; defined in an ultrasonic detection system?<\/strong><\/p>\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>A1:<\/strong> In an ultrasonic double sheet detection system, the sensor does not directly &#8220;observe&#8221; the material but rather distinguishes between the three states through differences in energy attenuation and unique signal characteristics after sound waves penetrate the material:<\/p>\n        <ul style=\"padding-left: 20px; margin: 0.5em 0;\">\n            <li style=\"margin-bottom: 0.5em;\"><strong>No Material:<\/strong> When no material is in the detection area, ultrasonic energy travels almost unimpeded from the transmitter to the receiver. Signal attenuation is minimal, and the received signal strength is highest. The sensor can then determine the state as &#8220;no material.&#8221;<\/li>\n            <li style=\"margin-bottom: 0.5em;\"><strong>Foglio singolo:<\/strong> When only one sheet of material passes through, ultrasonic waves penetrate this material layer, causing a certain degree of energy attenuation. The signal strength received by the receiver will correspond to the &#8220;single sheet&#8221; state.<\/li>\n            <li style=\"margin-bottom: 0.5em;\"><strong>Foglio doppio:<\/strong> When two sheets of material overlap and pass through, ultrasonic waves need to penetrate two layers of material, and additional reflection and significant energy attenuation may occur in the tiny gap (e.g., air layer) between the two layers. Therefore, the signal strength captured by the receiving end will be significantly lower than when penetrating a single sheet. The system precisely identifies the &#8220;double sheet&#8221; state based on this significant difference in energy attenuation.<\/li>\n        <\/ul>\n        <p style=\"margin: 0.5em 0 0 0;\">Therefore, during project implementation, it is usually necessary to complete threshold setting and stable discrimination by collecting baseline data for single sheet, double sheet, and no material (empty), which is a critical step to ensure system accuracy.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 2em;\">\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>Q2: Why is ultrasonic technology insensitive to color\/printing\/glossy surfaces?<\/strong><\/p>\n        <p style=\"margin: 0;\"><strong>A2:<\/strong> Ultrasonic detection primarily relies on the propagation characteristics of sound waves, their penetrating ability, and attenuation characteristics at material interfaces, rather than relying on visible light reflection intensity, color, or texture like optical imaging. Engineering data clearly indicates that ultrasonic double sheet detection can be used in printing scenarios and emphasizes its insensitivity to color and glossy surfaces, thereby significantly reducing on-site misjudgments caused by changes in material surface appearance and improving system stability.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 2em;\">\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>Q3: Why is ultrasonic technology particularly suitable for thin materials and high-precision scenarios?<\/strong><\/p>\n        <p style=\"margin: 0;\"><strong>A3:<\/strong> Thin materials and multi-layer stacking are difficult for traditional detection because their thickness differences are subtle, materials are soft and easily adhesive, and double-layer states are not easily &#8220;visually identified&#8221; stably. Ultrasonic detection distinguishes between single sheet\/double sheet by analyzing differences in sound wave attenuation related to the number of material layers. At the same time, professional engineering data also mentions that relevant sensors have extremely small usable blind zones (e.g., approximately 20 mm) and fine acoustic beam characteristics, enabling precise double-layer material detection in limited spaces, meeting high-precision requirements, especially suitable for lithium battery production processes.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 2em;\">\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>Q4: What are the main application scenarios and values of ultrasonic double sheet detection in typical industries such as lithium battery, photovoltaic, packaging, and printing?<\/strong><\/p>\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>A4:<\/strong> The core value of ultrasonic double sheet detection in these industries lies in its non-contact, high-precision characteristics, and its insensitivity to material surface properties, effectively solving the pain points of traditional methods:<\/p>\n        <ul style=\"padding-left: 20px; margin: 0.5em 0;\">\n            <li style=\"margin-bottom: 0.5em;\"><strong>Lithium Battery Industry:<\/strong> Primarily applied before electrode sheet and separator handling, alignment, stacking, or winding, to ensure the single sheet state of materials, prevent double sheets from entering the cell structure, thereby reducing scrap rates and potential safety risks.<\/li>\n            <li style=\"margin-bottom: 0.5em;\"><strong>Photovoltaic Industry:<\/strong> Ensures single sheet consistency during silicon wafer feeding, stacking, and before lamination, preventing double sheets from causing lamination quality defects and affecting module yield.<\/li>\n            <li style=\"margin-bottom: 0.5em;\"><strong>Industria dell'imballaggio:<\/strong> Widely used for labels, instructions, and joint detection, preventing product defects, material jams, and cascading errors in subsequent processes caused by double sheets\/missing sheets.<\/li>\n            <li style=\"margin-bottom: 0.5em;\"><strong>Printing Industry:<\/strong> Placed at key entry points before paper enters the printing unit, it immediately triggers shutdown protection when double sheets are detected, effectively preventing paper jams and minimizing damage to equipment.<\/li>\n        <\/ul>\n    <\/div>\n\n    <div style=\"margin-bottom: 2em;\">\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>Q5: In engineering implementation, why must &#8220;cycle\/response time&#8221; and linkage strategies be considered?<\/strong><\/p>\n        <p style=\"margin: 0;\"><strong>A5:<\/strong> Even if the sensor can accurately identify single\/double sheets, if the detection point is too far from the critical station, or if the PLC logic and actuator response speed are too slow, double sheets may still enter an irreversible station before being detected, making effective interception impossible. Professional engineering data emphasizes that ultrasonic sensors have fast response speeds and are very suitable for high-speed production lines. Therefore, during implementation, it is highly recommended to design the detection discrimination and shutdown linkage as a verifiable closed-loop system (i.e., input \u2192 discrimination \u2192 output action \u2192 production line recovery) to ensure that the system can respond to anomalies promptly and effectively.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 2em;\">\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>Q6: How can the misjudgment rate be effectively reduced and the reliability of ultrasonic detection (including installation, environmental impact, etc.) be ensured?<\/strong><\/p>\n        <p style=\"margin: 0 0 0.5em 0;\"><strong>A6:<\/strong> It is recommended to manage comprehensively from the &#8220;three elements&#8221; of engineering practice:<\/p>\n        <ol style=\"padding-left: 20px; margin: 0.5em 0;\">\n            <li style=\"margin-bottom: 0.5em;\"><strong>Accurate Baseline Collection:<\/strong> Establish reliable detection thresholds using actual single sheet, double sheet, and no material samples. When changing materials or batches, be sure to re-verify or adjust the baseline.<\/li>\n            <li style=\"margin-bottom: 0.5em;\"><strong>Stable Installation and Acoustic Coupling:<\/strong> Always maintain the stability of sensor installation, ensure an unobstructed acoustic beam path, and avoid changes in acoustic coupling caused by mechanical vibration, airflow, or loose components. It is crucial that the acoustic beam &#8220;goes the right way&#8221; to ensure that the sensor always provides the same acoustic response under the same material state and position.<\/li>\n            <li style=\"margin-bottom: 0.5em;\" class=\" translation-block\"><strong>Optimized Linkage and Fault Tolerance Mechanisms:<\/strong> Design alarm and shutdown strategies as controllable, tiered processes (e.g., only alarm for minor anomalies, immediate shutdown for severe anomalies), and consider a certain fault tolerance space. Additionally, ultrasonic technology\u2019s insensitivity to color\/gloss fundamentally reduces some sources of misjudgment; its high-speed response capability also makes anomaly handling more timely and effective.<\/li>\n        <\/ol>\n    <\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-c29c223\" id=\"related-products\" data-block-id=\"c29c223\"><h4 class=\"stk-block-heading__text\">Prodotti correlati<\/h4><\/div>\n\n\n\n<div data-wp-context=\"{&quot;notices&quot;:[],&quot;hideNextPreviousButtons&quot;:false,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;Prodotti precedenti&quot;,&quot;ariaLabelNext&quot;:&quot;Prodotti successivi&quot;,&quot;collection&quot;:&quot;woocommerce\\\/product-collection\\\/hand-picked&quot;}\" data-wp-init=\"callbacks.onRender\" data-wp-interactive=\"woocommerce\/product-collection\" 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contained\"\n\t\t\t\t\t\taria-label=\"Ignora questo avviso\"\n\t\t\t\t\t\tdata-wp-on--click=\"actions.removeNotice\" data-no-translation-aria-label=\"\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\" \/>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/template>\n\t\t<\/div>\n\t\t<ul data-block-name=\"woocommerce\/product-template\" class=\"wc-block-product-template__responsive columns-5 wc-block-product-template wp-block-woocommerce-product-template is-layout-flow wp-block-woocommerce-product-template-is-layout-flow\" data-wp-on--scroll=\"actions.watchScroll\" data-wp-init=\"callbacks.initResizeObserver\"><li class=\"wc-block-product post-4849 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-energy-sensors product_cat-ultrasonic-sensors first instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":4849}'\n\t\t\t\tdata-wp-key=\"product-item-4849\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"ISUDB40-12GM75-M12 Sensore di rilevamento doppio foglio a ultrasuoni-1\" data-testid=\"product-image\" data-image-id=\"4850\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-768x768.png 768w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1-100x100.png 100w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/10\/ISUDB40-12GM75-M12-Ultrasonic-Double-Sheet-Detection-Sensor-1.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/ultrasonic-double-sheet-sensor-detection-m12\/\" target=\"_self\" >ISSRSensor M12 Sensore a ultrasuoni per il rilevamento di fogli doppi<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-6654 product type-product status-publish has-post-thumbnail product_cat-ultrasonic-energy-sensors product_cat-ultrasonic-sensors  instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6654}'\n\t\t\t\tdata-wp-key=\"product-item-6654\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/issrsensor.com\/it\/products\/issr-ultrasonic-double-sheet-sensor-multi-material-detection-for-automation\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/Ultrasonic-singledouble-sheet-detection-sensor-ISUDB60-18GM75-01-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sensore a ultrasuoni per il rilevamento di fogli singoli e doppi-ISUDB60-18GM75-01\" data-testid=\"product-image\" data-image-id=\"6658\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/Ultrasonic-singledouble-sheet-detection-sensor-ISUDB60-18GM75-01-300x300.png 300w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/Ultrasonic-singledouble-sheet-detection-sensor-ISUDB60-18GM75-01-150x150.png 150w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/Ultrasonic-singledouble-sheet-detection-sensor-ISUDB60-18GM75-01-500x500.png 500w, https:\/\/issrsensor.com\/wp-content\/uploads\/2025\/12\/Ultrasonic-singledouble-sheet-detection-sensor-ISUDB60-18GM75-01-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title has-small-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/issrsensor.com\/it\/products\/issr-ultrasonic-double-sheet-sensor-multi-material-detection-for-automation\/\" target=\"_self\" >ISSRSensor Sensore a ultrasuoni a doppia lastra | Rilevamento multimateriale per l'automazione<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-6671 product type-product status-publish has-post-thumbnail product_cat-high-frequency-ultrasonic-transducer product_cat-ultrasonic-transducers  instock featured shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":6671}'\n\t\t\t\tdata-wp-key=\"product-item-6671\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto 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target=\"_self\" >ISSRSensor 200kHz High-Sensitivity Ultrasonic Transducer Sensor for Double Sheet &#038; Distance Detection<\/a><\/h2>\n\n\t\t\t\t<\/li><\/ul><\/div>\n\n\n<div data-block=\"hook:7173\" class=\"alignfull\"><article id=\"post-7173\" class=\"post-7173\"><div class=\"entry-content is-layout-constrained\">\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-7cd03f1 stk-block-background\" data-block-id=\"7cd03f1\"><style>.stk-7cd03f1 {background-color:#dedede1a !important;border-top-left-radius:0px !important;border-top-right-radius:0px !important;border-bottom-right-radius:6px !important;border-bottom-left-radius:6px !important;overflow:hidden !important;border-style:dashed !important;border-color:var(--theme-palette-color-6, #edeff1) !important;border-top-width:1px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:0px !important;padding-top:1rem !important;padding-right:1rem 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