Question: how to solve the pitting problem in the carrier tape production process?
A: the most difficult problem to solve in the production of conductive PC electronic tape carrier is carbon deposition. Carbon deposition refers to that some incompatible carbon black will be accumulated at the discharge hole of the die after the tape carrier works for several hours. The main reasons for carbon deposition are as follows:
(1) The mixing of conductive PC during granulation is uneven, so that the carbon black can not be completely compatible with PC resin.
(2) The carbon black used has poor compatibility and low carbon black concentration. A large amount of carbon black needs to be added to ensure a stable resistance value, which will also lead to that the carbon black can not be completely compatible with PC resin.