Ultrasonic Double Sheet Sensor | Eliminate Sheet Stacking & Production Downtime
ELEsenson Ultrasonic Double Sheet Sensor is a professional non-contact detection device tailored for automated sheet feeding production lines. It fundamentally solves the common hidden failure of sheet overlapping, adhesion and double/multi-sheet feeding, effectively avoiding paper jams, product scrapping, tool and mold damage, and frequent equipment downtime caused by stacked materials. It delivers stable, high-precision layer detection for diverse thin materials across industrial scenarios, greatly reducing production loss and improving line operational efficiency.
01.Core Pain Points of Sheet Stacking in Automated Production
Sheet adhesion and overlapping feeding are long-standing invisible problems in automated processing. Due to static electricity, material friction and mechanical feeding deviation, two or more sheets often enter the workstation undetected. This abnormal condition directly triggers a series of production failures: equipment paper jams, finished product defects and scrapping, precision cutting tool wear, mold collision damage, and unplanned line shutdowns. These issues not only raise raw material and maintenance costs but also severely restrict continuous production capacity and product yield.

02.Working Principle: Non-Contact Ultrasonic Penetration Detection
Different from traditional photoelectric sensors limited by material appearance, the ELEsenson ultrasonic double sheet sensor adoptsultrasonic sound wave penetration principle for non-contact real-time detection. It accurately identifies four material states: no material, single sheet, double sheets, and multi-sheet stacking. The sensor intercepts stacking risks at the feeding source, realizing full-process error prevention for sheet feeding and ensuring stable, continuous and efficient operation of automated production lines.

03.Core Advantages & Key Technical Features
3.1 Color & Transparency Independent Detection, Wide Material Compatibility
Relying on ultrasonic penetration rather than visible light reflection, the sensor is completely immune to material color, transparency, surface reflectivity and pattern differences. It perfectly makes up for the detection blind spot of photoelectric sensors on transparent and high-reflective materials. It supports reliable detection of paper, packaging film, aluminum foil, copper foil, lithium battery separators, and thin PCB boards, covering most thin industrial materials.
3.2 0.02–4mm Ultra-Wide Detection Range with One-Touch Teaching
It covers an ultra-wide material thickness range of0.02mm to 4mm, adapting from ultra-thin micro-films to thin metal sheets. Equipped with one-touch teaching function, it supports one-click parameter calibration during material switching. It greatly shortens production line changeover and debugging time, improves production flexibility, and meets the flexible production needs of multiple materials and multiple processes.
3.3 Millisecond High-Speed Response, Adapt to High-Speed Production Lines
With millisecond-level signal output speed, the sensor synchronizes with high-speed feeding equipment without delaying line operation. It maintains stable and accurate multi-layer identification and double-sheet judgment under high-frequency and high-speed operating conditions, ensuring detection accuracy and production efficiency do not conflict.
3.4 IP65 Industrial Protection, Stable for Harsh Workshop Environments
Built with IP65 dustproof and waterproof rating, the sensor integrates reverse connection protection and transient overvoltage protection functions. It resists workshop dust, light oil pollution, and temperature & humidity fluctuations. It effectively avoids false detection and missing detection during long-term continuous operation, maintaining consistent and reliable detection performance in complex and harsh industrial environments.
3.5 Plug-and-Play Integration, Compatible with PLC Systems
It supports optional NPN/PNP dual signal output, which can be directly connected to industrial PLC equipment. It features simple wiring, fast installation and zero-compatibility adaptation. It is applicable to both new automated machinery and old equipment renovation, realizing rapid deployment and online use with low application threshold.
04.Multi-Industry Industrial Application Scenarios
4.1 Printing & Packaging Industry
Applicable to printing machines, box gluing machines, laminating machines and collating machines. It detects paper, cardboard, label paper and packaging film, effectively preventing double-sheet feeding caused jams, printing registration errors and product scrapping. It reduces equipment maintenance frequency and stabilizes packaging line productivity.

4.2 Lithium Battery Manufacturing
Deployed on battery stacking workstations to detect battery separators, positive/negative electrode sheets, copper foil and aluminum foil. It accurately alarms for double-layer stacking, eliminates battery short-circuit risks caused by stacked electrode materials, improves battery product yield, and ensures safe and standardized battery production.

4.3 Precision Electronics Manufacturing
Suitable for conveying and detection of FPC flexible circuits, thin PCBs and silicon wafers. It identifies stacked sheet materials in real time to prevent multi-layer materials from entering precision processing stations, protecting cutting tools, stamping parts and precision electronic components from damage, and reducing precision equipment loss.

4.4 Flexible Packaging & Metal Stamping
Matching bag-making machines, film laminating production lines and hardware stamping sorting systems. It detects aluminum-plastic film, plastic film and thin metal sheets to avoid double-layer feeding faults, protect molds and core equipment, and reduce raw material waste and defective rate.

4.5 Food Packaging Production
Food packaging films, aluminum-plastic composite films and seasoning bag materials are prone to adhesion due to static electricity. Installed on bag-making machines, seasoning bag distributors and snack sealing stations, the sensor intercepts double-layer film feeding, avoids poor sealing, product leakage and package damage, and eliminates line downtime caused by packaging jams.

05.Conclusion
Sheet stacking and adhesion are key invisible faults that restrict the stability and yield of automated production lines. The ELEsenson Ultrasonic Double Sheet Sensor solves industrial detection pain points with non-contact anti-interference performance, wide material adaptability, high-speed response and industrial-grade stability. It provides efficient and reliable error-proof detection solutions for printing, new energy, electronics, packaging and stamping industries.
ELEsenson focuses on industrial precision detection, with a full range of sensor products to solve various hidden production failures. We welcome users to share on-site production problems and customize targeted detection solutions.

elesenson
ELEsenson is a company specializing in the research, development, production, and sales of sensor technology, located in Wenzhou, Zhejiang, China. Upholding the corporate philosophy of “striving for perfection and pursuing excellence,” the company is committed to providing precise and reliable sensor solutions to customers worldwide. The company boasts an experienced R&D team dedicated to the research and development of cutting-edge sensor technologies. ELEsenon not only prioritizes product quality but also places a strong emphasis on customer needs. Production strictly adheres to international quality management system standards, ensuring that every product meets or exceeds customer expectations. Moving forward, Zhejiang ELEsenon will continue to pursue technological innovation and uphold the principle of quality first, striving to become a global leader in the sensor industry and providing customers with superior products and attentive service.
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