The difference between vacuum packaging bags made of co extruded film and composite film materials

Vacuum packaging bags use the principle of deoxygenation, which can effectively prevent moisture, oxidation, color and fragrance, and have many other functions. They are widely used in the market. The characteristics of vacuum packaging bag materials directly affect the effectiveness and use of vacuum packaging bags. Currently, there are two main types of vacuum packaging bag materials on the market: co extruded film materials and composite film materials. So, what are the differences between co extruded film and composite film vacuum packaging bags?

Composite film vacuum packaging bag:

In the processing of thin films, one raw material is extruded onto another film that has already been made, or different types of films that have already been made are bonded together to form a multi-layer film. This product is called a composite film. The basic requirement for composite film is good adhesion between layers to achieve the overall mechanical properties of the packaging.

Co extruded film material vacuum packaging bag:

Co extruded film has most of the characteristics of composite film, but there is one difference, that is, all layers of co extruded film are extruded at the same time, so there will be no other non plastic materials such as aluminum foil and paper. The combination forms of its product materials are relatively limited, and the scope of application is also small. However, due to the hot melt bonding between the winter bonding layer and the layer without the need for adhesive, the hygiene and safety of the co extruded film for food packaging should be relatively reliable.

The above differences between co extruded film and composite film materials for vacuum packaging bags have been sorted out by Jinde Packaging. Jinde Packaging has more than 10 years of experience in producing vacuum packaging bags, with excellent equipment, advanced skills, thoughtful service, strong production capacity, and fast delivery speed. It is an ideal wholesale and customized manufacturer for vacuum packaging bags. Hotline: 15902743510