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With the development of electronic products towards short, small, light and thin, the demand for fpc is gradually increasing. Many friends don't know what raw materials are needed to make fpc. Now let's talk about it in detail according to the actual situation of the factory.

Main materials

1. Raw materials

(1) Glued material and non-glued material; The copper on the material is divided into electrolytic copper and calendered copper. The non-adhesive calendered copper is flexible and has good folding property.

(2) Material thickness: PI copper thickness

2. Cover film

The covering film is composed of PI and glue.

3. Reinforcement

There are generally the following types of reinforcement; PI reinforcement, PED reinforcement, FR4 reinforcement, steel sheet reinforcement, etc. Generally, the thickness of reinforcement is PI1/2/2, PI11, PI21, PI31 to PI91. The two values after PI respectively represent the thickness of PI and the thickness of adhesive, in Mil. The thickness is determined according to customer requirements.

4. Pure rubber

Pure rubber is mainly used for lamination and lamination of multilayer plates, and also for bonding and reinforcement.

5. Screen closing film

It mainly plays the role of signal screen closing and should be grounded.

6, 3M glue

Bonding reinforcement and fixing FPC.