&Nbsp; Prevent mutual heat transfer printing between FPC products, reduce operating procedures, improve work efficiency, control solder pads and gold finger overflow (can be controlled below 2mil). The product is free of silicone oil and plasticizers to prevent secondary pollution of FPC. High temperature resistance, melting point above 235 ℃, to prevent static electricity generation and improve product performance. Halogen-free compliance with environmental requirements, chemical resistance, low water absorption, preventing high-precision FPC from being pressed improperly and controlling foaming. Compared to a single multi-layer film, it can prevent operational errors. The release film is colorless, odorless, tasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness, and good transparency. The surface energy of BOPP release film is low, and corona treatment is required before gluing or printing.

However, after corona treatment, the BOPP film,Release membraneIt has good printing adaptability and can achieve exquisite appearance effects through color matching printing, so it is commonly used as a surface material for composite films. BOPP release film also has shortcomings, such as easy accumulation of static electricity and lack of heat sealing. On high-speed production lines, BOPP film is prone to generating static electricity and requires the installation of an electrostatic remover. In order to obtain a heat sealable BOPP film, a heat sealable resin adhesive, such as PVDC latex, EVA latex, etc., can be coated on the surface of the BOPP film after corona treatment. Solvent adhesive can also be coated, and the heat sealable BOPP film can be produced by extrusion coating or co extrusion composite method.

This film is widely used in packaging such as bread, clothing, shoes and socks, as well as in the cover packaging of cigarettes and books. The initiation tear strength of BOPP film increases after stretching, but the secondary tear strength is very low. Therefore, there should be no notches left on both ends of BOPP film, otherwise BOPP film is prone to tearing during printing and lamination. After BOPP is coated with adhesive, it can produce box sealing tape, which is a market with a large amount of BOPP.