PETAs a plastic film made of metal, aluminum has high barrier, oil resistance, and easy puncture properties that other plastic materials cannot have. The food packaging bags produced are more high-grade. currently applied*Most aluminized films mainly include polyester aluminized film (VMPET)and CPPAluminized film (VMCPP). The aluminized film has both the characteristics of a plastic film and the characteristics of a metal. The role of aluminum plating on the surface of the film is to shading and prevent ultraviolet radiation, which not only prolongs the shelf life of the contents, but also improves the brightness of the film. To a certain extent, it replaces aluminum foil, and it is also cheap, beautiful and good. , the application of aluminized film in composite packaging is very extensive. At present, it is mainly used in the packaging of dry and puffed food such as biscuits, as well as the outer packaging of some medicines and cosmetics. Aluminum-plastic composite food packaging bags are printedOPPorCPPThe plastic film is then compoundedPETAluminum composite production is completed, the printing production process is rigorous, and the bag making form can also be made into three-side seal, back seal, Yin Yang bag (that is, one side is transparent, and the product inside can be seen intuitively), five-side seal bag, heterosexual There are many types of bags, etc., and the thickness of the packaging is also freely selected by the customer, generally on one side7-15between wires.