How to test the pressing auxiliary materials of FPC FPC

The test method for pressing auxiliary materials of FPC flexible circuit board is as follows:

Appearance inspection: the surface is smooth and clean, without cracks, cracks, particles, bubbles, pinholes and foreign impurities. Thickness: measure with micrometer, take five points for measurement, read and record the data. Dimension: measure with a ruler or tape, take equal sides for measurement, read data and record.

1. Temperature resistance test of fired iron plate, green silica gel, silicon aluminum foil and glass fiber cloth FPC accessories (silicone oil precipitation).
2. High temperature resistant tape FPC auxiliary material temperature resistance test: continuously raise the temperature of the high temperature resistant tape for temperature resistance test (temperature: 200 ℃; preloading: 10s; molding time: 180s; pressure: 120kg/cm2 for 10~20 consecutive operations), and no brittle fracture is allowed.
3. Temperature resistance test of FPC auxiliary materials of release film: the release film shall be continuously heated for temperature resistance test (temperature: 200 ℃; prepressing: 10s; molding time: 180s; pressure: 120kg/cm2 for 5~10 consecutive operations), and no brittleness is allowed. Silicon oil precipitation test: press the copper foil and the sample release film (temperature: 180 ℃; preheating time: 10s; molding time: 180s; pressure: 100kg/cm2), press for 3 to 5 times continuously, and then conduct nickel plating test after pretreatment. After nickel plating, observe with a 10x magnifying glass, and no copper exposure is allowed.