Coil flex pcb with high temperature adhesive 3M467

Coil FPC mainly used for POS payment machine. Coil FPC usaully need to use the adhesiveless PI and 1/2 oz Copper or 1/3 oz Copper to decrease the FPC total thickness. Then the coil fpc can have a better bending effect. Most of our Pos payment machine customers are from Australia and Brazil. Small size coil fpc with high temperature, it may also has the possiblity for squeeze out the adhesive on the FPC if we put it on the high temperature environment in the long term. As we all know, the electornic product if working for too long, it will be easy to produce the heat. And this is also why we need to use the high temperature on the FPC instead of normal temperature adhesive.