What are the advantages of aluminum foil packaging bags, how do distinguish between aluminum foil bags and aluminized bags?

 Material: bright aluminum foil composite material (PET/AL/PE), matte aluminum foil composite material (MPET/AL/PE).

The characteristics of aluminum foil: the surface of the aluminum foil is very clean and hygienic, no microorganisms can grow on its surface, and it can be in direct contact with food without any hazard to human health. As an opaque packaging material, it has good protection for products exposed to sunlight, such as oily products, solid beverages, coffee, etc. It is a good packaging material, no matter at high temperature or low temperature, aluminum foil will not There is a phenomenon of soaking. The air and moisture transmission rate are low, which can protect the inner products well. The aluminum foil itself has no volatility, and it and the packaged food will not dry or shrink. The odorless and odorless packaging material will not cause any peculiar smell to the packaged food. It has stable performance, can be stored in various high and low-temperature environments, and has a certain degree of corrosion resistance.

Why add a layer of pure aluminum foil to the packaging bag? Aluminum foil is also widely used in isolation, heat exchange, and as a conductor. Generally, the thickness of aluminum foil used in paper-wrapped beverage packaging and food packaging bags is only 6.5 microns. This thin aluminum layer can be waterproof, preserve umami, prevent harmful microorganisms, and prevent pollution. It has the characteristics of opacity, silver-white, anti-gloss, good barrier properties, high/low-temperature resistance, oil resistance, heat sealability, light shading, fragrance retention, no peculiar smell, and flexibility.

Aluminum-plated packaging bags are coated with a thin layer of aluminum powder on the plastic film to play a decorative role. Aluminum-plated packaging bags are also called aluminum-plastic packaging bags. An aluminum foil packaging bag, as the name suggests, is a packaging bag with aluminum foil (pure aluminum) in the internal structure. Because the inner structure contains pure aluminum foil, it is called an aluminum foil packaging bag for short, also called a pure aluminum bag, an aluminum platinum bag. The aluminum foil bag is a bag made by laminating a variety of plastic films and 99.9% pure aluminum layer, and then sealing and cutting the bag through the bag forming machine. In terms of performance, the cooling effect is better than that of aluminum-plated bags, pure aluminum bags are completely protected from light, and aluminum-plated bags have a shading effect. From the material point of view, pure aluminum bags are pure aluminum with high purity and are soft materials; aluminum-plated bags are mixed with composite materials and are brittle materials. In terms of use, pure aluminum bags are more suitable for vacuumings, such as cooked food, meat, and other products, while aluminum-plated bags are suitable for tea, powder, etc. In terms of cost, the unit price of pure aluminum bags is higher than that of aluminum-plated bags. When the inside of the bag is facing the light of the sun, the only thing that can be seen through the bag is the aluminum foil, and the only invisible thing is the pure aluminum foil.

In appearance, there is little difference between the two. For the same product, if it is placed in an aluminum-plated package, it may lose water for a month and cause a large number of microorganisms to grow. When placed in an aluminum foil packaging bag, a similar situation may not appear until half a year later. To ensure the quality of the products inside, many packages are vacuum treated. After the vacuum is applied, the internal oxygen is reduced, and there is no environment for microorganisms to grow, to achieve the effect of protecting the product. Secondly, the aluminum foil packaging bag is very stable and generally will not deteriorate due to the influence of the external environment. In terms of function, the two are far apart. First of all, because the interlayer of the aluminum foil bag is pure aluminum foil, its moisture-proof, light-proof, waterproof, and oxidation-reducing effect is much stronger than that of aluminized packaging bags. Durability is the endorsement of aluminum foil packaging bags. Both types of packaging bags can be printed with patterns. The aluminum foil bag has a softer touch and the aluminum-plated bag has a harder touch. Therefore, aluminum foil bags are more suitable for food, medicine, chemical products, some electronic parts, and mechanical parts because of the need for sealing. Aluminum foil bags are often used. The aluminum-plated bags are mostly used for fast products. This is not to say that the aluminum-plated packaging bags are not good. It just proves that the aluminum-plated packaging is very cost-effective.