How to Make It Possible for WIS to Tell Metal Defects from Others

Abstract

Battery separator, which is one of the insulating sheets, is an indispensable material for its safety and functionality of an rechargeable battery that has been used for a hybrid car, an airplane, etc. In order to tell metal defects that might cause an electrode short circuit from other defects on the surface of battery separator, OMRON has developed an innovative technology of Web Inspection System. With the cameras for exclusive use and the near-infrared reflected lighting, we have got the experimental data that shows a metal defect such as Aluminum, Copper and Iron oxide, with a size of 100-micron order is told from other defects at the speed of 200m⁄min.