Due to the current domestic production environment and production process of non-woven fabrics, it is easy to cause defects such as mosquitoes, black spots, metal shavings, stains, slurry, and impurities to appear on the surface of the material during the production process. Due to the fast production speed and small defects of the products, Problems such as traditional manual visual inspection cannot meet sanitary material quality standards. The SIMV non-woven stain detector can conduct 7*24 hours of high-speed, high-precision online detection of surface defects on high-speed non-woven production lines. For later stages Defects such as mosquitoes, black spots, impurities, foreign matter, stains, pulp lumps, etc. that affect product quality are automatically detected and alarmed. While improving product quality, it saves labor costs and improves the competitiveness of the company's products. Thermo Fisher's SIMV nonwoven stain detector has been recognized by more and more nonwoven companies and has become an indispensable part of high-speed, high-quality production.

【Detection Principle】                                            

　　Due to the uneven thickness, sparse and uneven structure of the non-woven fabric itself, as well as the randomness of the distribution of defects (the front, back and middle of the non-woven fabric), the traditional transmission lighting method can easily cause missed detections and false alarms in the system. Thermo Fisher's SIMV nonwoven stain detector uses a shadowless bright field to form a detection environment, that is, one light source is transmitted below the material, and the other light source is reflected above the material. When the production line starts running, the CCD camera collects data based on the encoder The speed signal is synchronously scanned and captured, and the collected images are dynamically segmented through the SIMV image analysis software algorithm. Through the grayscale difference between the defective image and the normal product, defects are discovered and alarms, statistics, classification, recording, etc. operate.

【Technical Parameters】                               

【Defect Pictures】

【System Functions】                                                      

　　(1) Accurate defect map (X, Y coordinates) positioning display module;

　　(2) Automatic sound and light alarm, and display the current and previous 10 defect images;

　　(3) Real-time defect information display, recording the current defect type, area (diameter), horizontal and vertical position and other information;

　　(4) Basic product information module, which records product batch number, model, specification, shift number, operator and other information (the user can modify it according to the production situation);

　　(5) Real-time meter detection and alarm information display;

　　(6) Automatic classification of defects based on characteristics such as defect area size, shape, grayscale difference;

　　(7) Automatic alarm for periodic and continuous defects;

　　(8) Automatically generate product defect records for each roll of products, and users can directly query according to the batch number;

　　(9) Automatically change rolls and automatically print a quality report of product information for each roll;

　　(10) Functions such as automatic statistics, saving, querying, calling and printing of detection history records;

　　(11) Long-term, large-capacity historical record storage;

　　(12) Automated linkage of production lines, remote technical services, etc.;

　　Note: The software functions can be customized and developed with special functions according to the different requirements of users.

【Field Application】