This is designed to produce 1~3 layer extrusion casting film with PE, PP, Adhesive, PA, EVOH, EVA and others as raw materials. With the development of technology and improvement of people living standard, the keep-fresh oxygen proof film is widely applied in food packing industry. People are pleased with multi layer film in many kinds of industry. Multi layer film can be made with either symmetrical or asymmetrical structure configurations to meet the customized needs of a broad variety of applications. With this film¡¯s superior barrier property, it has a number of applications in medical, chemical industry packing, agricultural chemicals packing, food packaging-like high barrier film, vacuum pouches, etc.