Best aluminum foil bag supplier:Barrier performance of vacuum bag

Because different products have different requirements for aluminum foil bag materials, the material selection of aluminum foil bag shall be made according to the product characteristics, including whether it is easy to deteriorate, the factors leading to deterioration (light, water or oxygen), product form, product surface hardness, storage conditions, sterilization temperature, etc.
A good aluminum foil bag does not have to have many functions, but depends on whether it is suitable for the product.
1. Products with regular shape or soft surface: for products with regular shape or soft surface, such as meat sausage products, bean products, etc., it is not necessary to require high mechanical strength of the material, but only to consider the barrier of the material and the impact of sterilization temperature on the material.
Therefore, for such products, OPA / PE aluminum foil bag are generally used. If high temperature sterilization is required (above 100 ℃), OPA / CPP structure can be adopted, or high temperature resistant PE can be used as the heat sealing layer.
2. Products with high surface hardness: for products such as meat and bone products, due to high surface hardness and hard protrusions, it is easy to puncture the aluminum foil bag during vacuum pumping and transportation.
Therefore, the aluminum foil bag of such products needs to have good puncture resistance and cushioning performance.
Aluminum foil bag made of PET / PA / PE or OPET / OPA / CPP can be selected. If the product weight is less than 500g, you can try to use OPA / OPA / PE packaging bag.
This bag has good product adaptability, better vacuum pumping effect, and will not change the shape of the product.
3. Perishable products: low temperature meat products and other products that are easy to deteriorate and need low-temperature sterilization do not have high requirements for the strength of the aluminum foil bag, but they are required to have excellent barrier.
Therefore, pure coextrusion film, such as PA / PE / EVOH / PA / PE structure film, dry compound type, such as PA / PE film, and K coating material can be selected. High temperature products can use PVDC shrink bags or dry compound bags.
4. Higher grade and high-quality products: seven layer co extrusion packaging, with better barrier performance, can meet the needs of the products mentioned in points 1, 2 and 3 at the same time. Its use makes your products more high-grade and greatly prolongs the shelf life of the contents.

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