The invention provides a preparation method of a colored aluminum-plastic composite film. The method adopts a thermal co-extrusion process to produce a colored outer protective layer, solving the problem of low composite strength and easy delamination of the second adhesive layer in the processing of traditional black films caused by the addition of carbon black and dispersant. It effectively prevents the reverse precipitation of a slipping agent during high-temperature and low-temperature processing of the aluminum-plastic film, improves the surface smoothness of the aluminum-plastic film, and facilitates its deep drawing performance. In the use of battery components made from the aluminum-plastic film, the colored outer protective layer effectively blocks water vapor penetration and improves the damp-heat resistance of the aluminum-plastic film.
Area Code: CN
Application Number: CN202010613598.7
