Aluminum foil bags and composite bags are widely used in the fields of food packaging and electronic packaging. With the development of packaging technology, the product quality, performance, aesthetics and practicality of aluminum foil bags and composite bags have been qualitatively improved. So, what are the obvious differences between aluminum foil bags and composite bags? The following editor will summarize and analyze for you:
Aluminum foil bags are divided into three-layer composite aluminum foil bags and four-layer composite aluminum foil bags, which can be subdivided into ordinary aluminum foil bags and high-temperature cooking aluminum foil bags. The outer material is PET, the center layer is pure aluminum foil bags, and the inner layer is made of Usually PE or CPP, the center of the four-layer aluminum foil bag has a layer of PA material, which can greatly increase the strength and insulation function of the aluminum foil bag. The shape of the aluminum foil bag can be seen very clearly in the supermarket. The ones used by the public are still made of three sides, the bottom layer, and three pieces on the left and right. This shape facilitates the placement of goods and has a three-dimensional effect.
Aluminum foil bags have the functions of heat sealing, insulation and light protection. The physical strength of aluminum foil bags is very good, which is very suitable for vacuum packaging of food, electronics, medicine, and export fine equipment. Other composite bags are mostly divided into two or three layers of structure. The common outer layer is BOPP and the inner layer is polyethylene. The isolation function of this ordinary composite bag usually cannot meet the high-temperature sterilization treatment of food, and can only achieve the normal outer packaging effect of commodities. However, it can print all kinds of beautiful pictures and offer relatively cheap aluminum foil bags.