Custom Printed Clear Flat PE Plastic Poly Bag for Frozen Food Packaging

There are many types of packaging materials with different properties. Only by understanding the physical properties of various packaging materials can we choose reasonable materials according to the protection requirements of frozen food, so that they can not only maintain the flavor and quality of the food, but also reflect the value of the product.

At present, plastic flexible packaging used in the frozen food field is mainly divided into three categories:

The first type is single-layer packaging bags, such as PE bags, which have relatively poor barrier effects and are commonly used for vegetable packaging;

The second category is composite soft plastic packaging bags, which use adhesive to bond two or more layers of plastic film materials together, such as OPP/LLDPE, NY/LLDPE, etc., which have relatively good moisture-proof, cold-resistant, and puncture-resistant properties;

The third category is multi-layer co-extruded flexible plastic packaging bags, in which raw materials with different functions such as PA, PE, PP, PET, EVOH, etc. are melted and extruded separately, merged at the main die, and then combined together after blow molding and cooling. , this type of material does not use adhesives and has the characteristics of no pollution, high barrier, high strength, high and low temperature resistance, etc.