Aluminum foil bags are also called pure aluminum bags. Aluminum foil bag packaging usually refers to aluminum plastic composite vacuum packaging bags. Such products are suitable for moisture-proof, light proof and vacuum packaging of large precision mechanical equipment, chemical raw materials and pharmaceutical intermediates. The four layer structure is mostly adopted, with good water and oxygen isolation functions.

Various materials with different characteristics are combined to improve the air permeability, moisture permeability, oil resistance, water resistance and drug resistance of packaging materials, so that they can play a role in insect prevention, dust prevention, microbial resistance, light, smell and other odor isolation, and heat resistance, cold resistance, impact resistance have better mechanical strength and processing applicability, and have good printing and decoration effects.