Why add a layer of pure aluminum foil to the packaging bag?
Aluminum foil is also widely used in isolation layers, heat exchange, and as an electrical conductor. Usually, the thickness of aluminum foil used in paper packaging drinks and food packaging bags is only 6.5 microns. This thin layer of aluminum is waterproof, retains umami flavor, protects against harmful microorganisms and prevents contamination. It has the characteristics of opaque, silver white, anti-gloss, good barrier, high/low temperature resistance, oil resistance, heat sealing, blocking optical activity, fragrance protection, no odor, softness and so on.
Aluminized packaging bag is plated with a thin layer of aluminum powder on the plastic film to play a decorative role. Aluminized packaging bags are also called aluminum-plastic bags. Aluminum foil bag, as the name suggests, is a kind of packaging bag with an internal structure containing aluminum foil (pure aluminum), because the inner structure contains pure aluminum foil, referred to as aluminum foil bag, also known as pure aluminum bag, aluminum platinum bag. In fact, aluminum foil bag is a variety of plastic film and 99.9% of pure aluminum layer composite, through the bag molding machine sealing cut bag. In terms of performance, the cooling effect is better than that of the aluminized bag, the pure aluminum bag is completely shielded from light, and the aluminized bag is the shading effect. From the material point of view, pure aluminum bag is pure aluminum, high purity, is a soft material; Aluminized bag is mixed with composite material, which is brittle material. In terms of use, pure aluminum bags are more suitable for vacuuming, such as cooked food, meat and other products, while aluminized bags are suitable for tea, powder and so on. In terms of cost, the unit price of pure aluminum bags is higher than that of aluminized bags. Put the bag in front of the light or the sun, can see the light through the bag is aluminum foil plated, invisible is pure aluminum foil.
If you want the bag and shock proof effect, then you can choose Bubble Mailers. Bubble Mailer Bag is rich in air bubbles to provide protection. Or choose a Thermal insulated Box liner to transport cold collections is also a good choice.