What are the Main Materials of FPC
FPC is the abbreviation of Flexible Printed Circuit, which is widely popular for its lightness, thinness and flexibility and other characteristi cs. It uses various materials are used in the production process. The materials that make up the flexible PCB include insulating base material, adhesiv e, metal conductor layer (copper foil) and covering layer. The difference in materials also determines the performance of FPC. Next, I will introduce you to these materials. 1. Insulating Base Material Insulating base material is a flexible insulating film. As an insulating carrier for circuit boards, it is required to have good mechanical and electrical properties. Nowadays, polyimide (PI) film and polyester (PET) film are commonly used in FPC. Generally, the film thickness is selected within the range of 0.0127~0.127 (0.5mil~5mil). 2. A dhesive The adhesive acts as a bond between the film base material ...