Dongguan FPC punching common problems and corresponding control methods

FPC circuit board is made of polyimide or polyester film as the base material of a highly reliable, excellent flexible printed circuit board, referred to as soft board or FPC, with high wiring density, light weight, thin thickness, can be freely bent, folded, winding, can be arbitrarily moved and telescopic in three-dimensional space; Good heat dissipation performance, can use FPC to reduce the volume; Can realize lightweight, miniaturization, thin, so as to achieve the integration of components and wire connection.

FPC soft plate because of its light, thin and irregular shape and other reasons, molding can not be used in the way of gongs plate, and laser is not suitable for mass production because of low efficiency, so in mass production, can only use die cutting.

FPC soft plate punching common problems:

1. FPC skew

A, FPC artificial reasons (when positioning hole tight hole deformation)

B. Cut the FPC plate to the positioning hole

C. Cover the hole when FPC is pasted with auxiliary material

2. FPC crush injury

A. FPC blanking die compression injury

B. Clean the mold when FPC is not determined

3, FPC warping copper

A. FPC has low speed and low pressure

B, FPC mold knife edge is not sharp

4. FPC punching back: the direction of the feed is wrong.

Key points of FPC soft plate punching operation control:

1, FPC cutting board must be aligned with the cutting line

2, FPC self-test can not have serious burr or pull material, tear and abnormal concave and convex point, residual glue, reinforcing offset, off the mold paper fall off.

3. FPC pays special attention to the mold version to be consistent with the requirements.

4, FPC punching deviation must be within the tolerance, the measurement of excess tolerance shall be repaired after the mold is OK.