In fact, aluminum foil packaging bags can be vacuum-sealed. Moreover, four-layer aluminum foil bags (PET/AL/NY/CPE) deliver superior vacuum‑sealing performance compared to three-layer aluminum foil bags (PET/AL/CPE).

This is attributable to their product structure; taking a four-layer configuration as an example, PET serves as the outer layer, offering excellent transparency and superior barrier properties. Additionally, PET plastic exhibits outstanding wear resistance, dimensional stability, and electrical insulation, making it suitable for vacuum packaging.

PET; its typical thickness is 12 µm, and it boasts high strength, excellent transparency, non-toxicity, impermeability, and light weight.

NY; enhances physical strength, puncture resistance, and tensile performance.

PE is chlorinated polyethylene, which exhibits excellent chemical stability, aging resistance, flame retardancy, cold resistance, weatherability, free colorability, chemical resistance, ozone resistance, and electrical insulation properties, as well as good compatibility and processability.

AL refers to aluminum alloy. Aluminum is non-magnetic, has excellent reflectivity—capable of reflecting both visible light and ultraviolet radiation—exhibits good ductility, resists high temperatures, offers superior stability, and provides excellent water resistance. In packaging applications, it is typically used in the form of aluminum foil rolls.

Physical properties;

1. The outer layer is made of NY film,

2. The inner layer is a PE film,

3. The middle layer is AL.

4. Composite materials use high-temperature-resistant adhesives.

5. Storage conditions: Store at room temperature; avoid exposure to acids, alkalis, and other organic chemicals.

6. Strong puncture resistance and excellent vacuum-sealing performance,

7. The printing ink is heat-resistant.

Widely used in packaging for meat products, seafood, cooked foods, and more; in electronic product packaging; and in the pharmaceutical packaging sector, including medicines and medical device packaging.

Aluminum foil bag manufacturers can customize a variety of products to meet your needs, including food‑grade aluminum foil bags, desiccant pouches, vacuum‑sealed bags, medical bags, and more. For more information about aluminum foil bags, please contact our editor.