Why Food Is Packed In Aluminium Foils
Aluminum foil paper is usually used for food in daily life (such as: aluminum foil tray). Used to wrap bean sprouts, potatoes, sweet potatoes, fish, etc. during barbecue to prevent burning. Sometimes it is also used for decoration. Some hairstylists will wrap the hair with aluminum foil to heat the hair, which has a better heat transfer effect. Improper use of aluminum foil paper will cause burns, poor hair quality and other problems. After the aluminum foil is folded into a ball and opened, you can absorb the oil in the soup. The principle is that in the process of crumpling the aluminum foil , the surface tension of the aluminum foil will be amplified. Large rolls of aluminum foil are also widely used for isolation, heat exchange and as a conductor. Generally, the thickness of aluminum foil used for paper packaging beverage packaging and food packaging bags is only 6.5 microns. This thin aluminum layer can be waterproof, retain umami, antibacterial and antifouling.
Food aluminum foil bags generally have anti-gloss characteristics on the surface, do not absorb light, and are made in multiple layers. Therefore, aluminum foil rolls not only have good shading properties, but also have strong insulation, and because there are aluminum components inside, so It also has good oil resistance and softness. Compared with plastic bags, aluminum foil food packaging is non-toxic and has no special smell. It is definitely a green product, environmentally friendly, and aluminum foil product that also meets international health standards.
Generally, the aluminum foil used for food packaging is compounded in PE, paper and other materials, and is not in direct contact with food. Instant coffee bags, biscuit bags, tea bags, etc., although the inner surface looks like aluminum foil, there is actually a layer of PE film or other organic film; some cheese and egg tarts are directly packaged in aluminum foil, as long as they are not eaten in large quantities, they will affect the human It can be ignored, otherwise the aluminum foil will not be used for high-end food packaging.
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