There are many kinds of vacuum packaging bags. How to choose the Z optimal structure for customers?

Customers often ask the steaming bag manufacturer what kind of vacuum bag is good for vacuum packaging dried bamboo shoots, vacuum packaging bacon, vacuum packaging schisandra, vacuum packaging Huaishan and other local specialties. In fact, it depends on the characteristics of the product to choose the appropriate material of vacuum bag. From the barrier performance, vacuum packaging bags can be divided into non-barrier vacuum bags, medium barrier vacuum bags and high barrier vacuum bags; From the functional point of view, it can be divided into low-temperature resistant vacuum bag, high-temperature resistant vacuum bag, puncture resistant vacuum bag, shrink bag, self-supporting bag and zipper bag.

In the face of a variety of packaging materials and different product characteristics, how to select suitable vacuum packaging materials has become a problem that must be solved in practical production and application.

How to choose vacuum packaging bags for different types of products?

Because different products have different requirements for packaging materials, the material selection should be made according to the product characteristics, including whether it is easy to deteriorate, the factors that cause deterioration (light, water or oxygen, etc.), product form, product surface hardness, storage conditions, sterilization temperature, etc. A good vacuum 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 sausage products, bean products, etc., it is not necessary to require high mechanical strength of the material, but only need to consider the barrier of the material and the effect of sterilization temperature on the material. Therefore, packaging bags with OPA/PE structure are generally used for such products. If high temperature sterilization (above 100 ℃) is required, OPA/CPP structure can be used, or PE with high temperature resistance can be used as the thermal seal.

2. Products with high surface hardness:

For products such as meat products with bone, due to their high surface hardness and hard protrusions, they are easy to puncture the packaging bags during vacuuming and transportation. Therefore, the packaging bags of such products need to have good puncture resistance and cushioning performance. The vacuum bags made of PET/PA/PE or OPET/OPA/CPP can be selected. If the weight of the product is less than 500g, you can try to use the OPA/OPA/PE structure packaging bag, which has good product adaptability, better vacuum 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 have low requirements on the strength of the packaging bag, but they require good barrier property. Therefore, you can choose pure co-extrusion film, such as the film of PA/PE/EVOH/PA/PE structure, can also use dry copy method, such as PA/PE film, can also use K coating material. For high-temperature products, PVDC shrink bags or dry composite bags can be used.