What kind of material is the grain vacuum bag processed? It is pressed by several layers of material composite?

Grain vacuum packaging bag is made of seven layers of co-extruded film processing, seven layers of co-extruded film is made of environmental protection materials using physical hot melt method, without multi-layer composite, is a pure green packaging material, suitable for all kinds of food packaging.

Seven-layer co-extruded film co-extruded technology directly uses more than three kinds of plastic particles as raw materials, seven-layer co-extruded film mostly uses ABCBA five-layer symmetrical structure and seven layers of PA or EVOH as barrier layer, PE as heat seal layer, through several extruders to melt and plasticize each plastic, fed into a pair of die, and then after further processing, Multilayer composite film was prepared.

The seven-layer co-extrusion technology is different from the composite technology such as dry composite, it does not need to make plastic particles into thin film intermediate products, and multi-layer co-extrusion technology represents the direction of economy and environmental protection. It is a high-quality food packaging material.