Aluminized bags and pure aluminum bag are packaging bags of two different materials. Although they all contain aluminum foil, their thickness and aluminum content are very different.
1,from the material point of view, the pure aluminum bag has a pure aluminum layer in the middle, and the thickness is generally about 80 microns. High period hardness, good barrier property and good light shielding property.
The aluminized bag is a layer of aluminum-plated coating in the middle. The aluminum-plated coating is to liquefy the aluminum foil and spray it on the plastic. Therefore, the aluminum-plated film is relatively thin, and its light shielding and moisture resistance are not as good as the aluminum foil bag .
there are some aluminnized bags for your reference.
2. In terms of cost, the price of pure aluminum bag is higher than that of aluminum-plated bags;
3. In terms of performance, pure aluminum bag are better at preventing moisture and cooling than aluminum-plated bags. Pure aluminum bags are completely protected from light, and aluminum-plated bags are shading effects;
4. In terms of use, pure aluminum bag are more suitable for vacuuming, such as cooked food, meat and other products, while aluminum-plated bags are suitable for tea, powder, electronic components, etc .;
5, the inside of the bag is facing the light or the sun. The light that can be seen through the bag is aluminum foil, and the invisible is pure aluminum foil. That is, the aluminum foil bag has better light-shielding property.
Food aluminum coating is a thin layer of aluminum (about 300um) vacuum-evaporated on the substrate. Generally not used for cooking sterilization bags.
There are two reasons:
1 Generally, the aluminized film cannot bear the temperature of high temperature sterilization, and the aluminized layer will oxidize and blacken at high temperature.
2 The adhesion of the aluminum coating is poor, and the peel strength cannot meet the requirements of the cooking bag.
After distinguishing the knowledge of aluminum bag and food VMPE bag, I believe you have a corresponding understanding of the materials of these two bags. Henan Baolai Packaging Co., Ltd. specializes in the production and production of aluminum bag , food aluminum coated film bags, factories There are professional production equipment, using environmentally friendly inks, food-grade raw materials, to give you the most assured products. If you need to order aluminum bag or food aluminumed bag, please consult our online customer service for free samples, or call us to explain your requirements in detail!
Post time: Sep-28-2018