Causes of wrinkling in single layer area of fpc soft board

The reasons for the folds in the single-layer area of fpc soft board are as follows:

1.FPC flexible printed circuit board is not dry after wiping, and the surface of printed circuit board is splashed by liquid or hand-molded before printing and welding.

2, the material is too hard, it will be better to change to a softer material, and 654.38+ 10,000 fold is not a problem.

3. Too short fpc leads to wrinkling in the gold-sinking monolayer area of FPC soft board.