Metallized pet bopp laminating food packing film roll

Biaxially stretched polypropylene film. Its production involves first making polymer polypropylene melt into sheets or thick films through a narrow and long machine head, and then stretching it in two vertical directions (longitudinal and transverse) simultaneously or step by step in a dedicated stretching machine at a certain temperature and set speed. The film is then made by appropriate cooling or heat treatment or special processing (such as corona, coating, etc.).