Plastic packaging film, also known as card protective film, plastic film. Materials used for plastic packaging of paper usually contain plastic components.

Before use, according to the size of the paper that needs plastic packaging, cut out the plastic packaging paper with the appropriate size. Generally, there are various standard plastic packaging papers on the market, such as A4 and A6. Generally speaking, the area of plastic-coated paper needs to be larger than the paper to be plastic-coated.

When plastic packaging data pages, it is necessary to separate the plastic packaging film, sandwich the data pages in the middle, make the adhesive surface of the plastic packaging film face the data pages, then close the plastic packaging film, send it to the plastic packaging machine from front to back for heating, then press it with the front and rear rubber rollers, and then come out from the rear discharge port, thus achieving the purpose of plastic packaging.

Extended data:

Type:

Biaxially oriented polypropylene is made of polypropylene particles, which are coextruded into sheets and then stretched in vertical and horizontal directions. Due to the orientation of stretching molecules, this kind of film has good physical stability, mechanical strength, air tightness, high transparency and gloss, toughness and wear resistance, and is the most widely used printing film. The thickness is generally 20 ~ 40 microns, and the most widely used is 20 μ m.

The main disadvantage of biaxially oriented polypropylene is its poor heat sealability, so it is generally used as the outer film of composite film. For example, after being compounded with polyethylene film, its moisture resistance, transparency, strength, stiffness and printability are ideal, and it is suitable for loading dry food.

Due to the nonpolar surface of biaxially oriented polypropylene, high crystallinity, low surface free energy, poor printing performance and poor adhesion to ink and adhesive, surface treatment is needed before printing and compounding.