Pure aluminum foil packaging and aluminized packaging, a word difference, many people confuse the two. In fact, in the performance and price, the two are very different, choose which, need to be decided according to the specific product performance.
What is the difference between aluminum foil bag and aluminum plating bag?
Aluminum foil bag is actually a bag made of all kinds of plastic film and 99.9% pure aluminum layer, and then sealed and cut by bag making machine. Aluminized packaging bag is coated with a thin layer of aluminum powder on plastic film, play a decorative role. Aluminum foil surface is very clean and hygienic, the surface will not breed microorganisms, can directly contact with food, do not worry about harm to human health.
From the perspective of material, pure aluminum bag is pure aluminum with high purity, belonging to soft material; Aluminized bag mixed with composite material belongs to brittle material.
In terms of performance, the heat dissipation effect of pure aluminum foil is better than that of aluminized bag. The pure aluminum bag is completely shading, and the aluminized bag has shading effect. Because the interlayer of aluminum foil bag is pure aluminum foil, its moisture-proof, light-proof, waterproof, antioxidant effect is much stronger than aluminized bag. Pure aluminum foil as an opaque packaging material, it has a good protective effect on products exposed to the sun, such as oily products, solid drinks, coffee, etc. No matter in high temperature or low temperature, aluminum foil will not have a penetration phenomenon. Low air permeability and moisture permeability can protect the product in the bag.
In terms of use, both bags can print patterns, aluminum foil bag feel soft, aluminum bag feel hard. Therefore, aluminum foil bag is more suitable for food (such as rice, meat products, cooked food, etc.), medicine, chemical products, some electronic accessories, mechanical accessories, etc. Aluminum foil bags are often used for sealing purposes. Aluminized bags are mostly used for fast moving consumer goods (tea, powder, etc.). This is not to say that aluminized bags are bad, just that aluminized packaging is very cost-effective.
In terms of cost, aluminum foil bag is more aluminum than aluminum coated bag, so the production cost of aluminum foil bag is higher than the production cost of aluminum coated bag.
Two, how to distinguish between aluminum foil packaging bag and aluminum plating packaging bag?
The first method, the naked eye. Aluminum foil bag appearance is opaque, silver white, can reverse luster. Aluminized bag brightness is slightly weaker, aluminized bag reflective better, can shine a figure. When the bag is facing the sun or light, the aluminized bag can pass through the light, and the pure aluminum foil bag is opaque.
The second method is to touch it with your hands. Pure aluminum foil is a soft material, with a certain degree of ductility, so the feel is thick and crisp, aluminum coated bag is a brittle material, feel is softer than pure aluminum foil bag.
The third method is fire. Aluminum foil with fire point is not easy to burn, aluminum layer will be rolled back, after burning aluminum foil packaging will leave gray aluminum slag. When the aluminized film is burned, different plastic films can be burned, and there is no residual aluminum slag.
