Engineering Implementation in the design of high performance PCB
The common FPC packing is to stack the flexible circuits of 10 ~ 20pcs together, and fix in a cardboard with paper rolls to avoid using tapes, because tape adhesives which contain chemical substances, if be exudative it will easily lead to discolor the terminal oxidation. When the basement membrane is a polyimide film as it can easily absorb moisture, flexible printed circuit boards should be loaded together with silica gel and desiccant into the polyethylene bags and pressurize the bags. And then cased into corrugated boxes with cushioning materials. Due to the unique shape of the FPC, different form should be used different packings.
Some are to paste the FPC on the polyester prop-chips with weak adhesive coated before its punching form, and then make the semi-Rule Die-cut shape processing (embedded punching), it is original to the user, the user can take down FPC for assembly, also it can be assembled first, then after assembling to get from the polyester film prop. This way can only be used for the products with small-size, this will improve the process efficiency for both FPC manufacturers and the users.
The most secure and reliable way is to use a dedicated tray. First of all, to prepare the trays according to the varieties, although the management is trouble, the quality is guaranteed, convenient to use, and good for assembly. The cost is not high, may be discarded after use.