Les bosses d'alumini no són tòxiques. L'interior de la bossa d'aïllament de paper d'alumini és un material aïllant suau com l'escuma, que compleix la normativa de seguretat alimentària. El paper d'alumini té excel·lents propietats de barrera, bona resistència a la humitat, i aïllament tèrmic. Fins i tot si la calor arriba a la capa d'airbag de PE central a través de la capa interior de paper d'alumini, la convecció de calor es formarà a la capa mitjana, and it is not easy to penetrate the outer aluminum foil layer, so as to achieve a good heat insulation effect.
What material is the gold on the outside of the aluminum foil lunch box?
oxide layer.
Aluminum foil is a hot stamping material that is directly rolled into thin sheets from metal aluminum.
Due to its excellent properties, aluminum foil is widely used in food, beverages, cigarettes, productes farmacèutics, photographic film, household items, etc. Usually used as packaging materials, electrolytic capacitor materials, and heat insulation materials for buildings, vehicles, ships, houses, etc. It can also be used as decorative gold and silver thread, wallpaper, various stationery prints, and decorative trademarks of light industrial products.
In a variety of applications, the most effective performance of aluminum foil is as a packaging material.
