KGK Chemical Corporation.

 FPC 【Flexible Printed Circuits】 ：
 FPC is a type of printed circuit board.Since it is lamination of a copper foil and a base film (plastic film) , flexible and can be repeatedly deformed.Even if it is deformed, there is no problem in performance as a circuit. On the other hand, the rigid board is hard and does not bend. The FPC is thin and suitable for use in folding and moving parts, making it an indispensable member for the miniaturization, weight reduction, and thinning of all electronic devices such as smartphones, televisions, and laptop computers today.

 FCCL【Flexible Cupper Clad Laminate】 ：
 It is a material for FPC in which a thin copper foil and a base film are laminated.FPCs are manufactured from this material through a number of processes such as circuit pattern formation, printing, mounting of parts, punching etc..

 Three main characteristics required for the base film (plastic film) used in FCCL.

Heat-resistance :
Heat resistance that can withstand the solder reflow temperature (250℃), dimensional stability at high temperatures. (excluding FPC applications without soldering)

Adhesion to metal :
Strength and adhesion to withstand repeated bending and fine pitch machining on high-density wiring.

Low dielectric property :
Performance as an insulating film.(The higher the permittivity, the greater the loss of electrical signals)