Aluminum foil bag is a composite bag containing aluminum foil, but there is no aluminum foil in vacuum packaging bag, which is the biggest difference between aluminum foil bag and composite bag. Secondly, they also have some differences in material.
The film substrate of vacuum packaging bag includes outer printable film Bo, PA, Bo, pet and BOPP, and the inner heat sealing film is cpppe and co extrusion film. Aluminum foil is usually used as the intermediate layer material, and the plastic barrel sealing machine composes the composite film by glue.
The structure of aluminum foil packaging bag is PET / PA / PE or cpppet / Al / cpppa / Al / cpppet / PA0 / Al / CPPP.
PE in aluminum foil packaging bag is suitable for use at low temperature, CPP is suitable for cooking at high temperature, PA is to enhance the physical strength and puncture resistance of aluminum foil bag, and aluminum foil is to increase the barrier performance of aluminum foil bag.