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In daily life, we use lots of paper products, such as wrap paper and disposable tableware. We may found that almost all the kraft paper’s inner for food packaging looks reflective and has a smooth touch feeling. This is because they are made from PE-coated paper. Suppose we put the disposable tableware in the water and soak it for a while. In that case, we can easily separate a thin PE film out after the paper fibers get soft.

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What Is PE-coated Paper?

We’ve introduced coated papers before, PE-coated paper in one of them. It is special, not take the clay but PE(Polyethylene) as the coating; according to different uses, it also take PP(Polypropylene) or PET(Polyethylene terephthalate), etc. During processing, the plastic particles will be coated at the origin kraft paper’s surface by a machine after melting to form an only 0.04cm thin film. Due to it is coating in a hot melting way, it combines with the paper hard and is not easy to strip. And the whole process, without any chemical solvent assist, it’s safe and eco-friendly.

PE-coated Paper Features

Coating plastic on kraft paper can be said a great innovation. This technology gives the paper lots of new characters, which means a lot to industrial manufacture, and the cost is also low.

Water & Grease Proofing

The original kraft paper will get soft and out of shape when meeting water; use it to make a cup was a joke in the past until the PE-coated paper came. Because of the thin plastic film, liquid can not contact the paper surface directly and influence it. Hence, the low-cost and easy-process paper became the best choice for making disposable tableware.

Besides, use uncoated paper to pack the deli like French fries or fried chicken, the oil often oozes out the paper and greasy the hands. With the PE-coated paper, this situation will never happen.

 

Varieties & Applications

Single-side PE-coated Paper

The kraft paper that only one side got PE-coated. The coated side can not get an excellent printed effect, so most disposable paper food packaging bags only get coated inside. The outside will print the brand LOGO and relative information to get better promotion.

Double-side PE-coated Paper

Double-side PE-coated paper is typically used in making disposable food containers, such as paper cups and to-go boxes. The inner film-coated is primary for preventing water from oozing. And the external coated is for avoiding the water in the air from condensing and making the surface get soft and play a hardness improvement and shaping effect.

Sandwich PE-coated Paper

Like a sandwich, the PE-coated film is in the middle of two kraft papers. It’s less used alone, typically taken as a surface texture. One side can be pattern printed, the other side mounting on other material like corrugated to improve their dampproof performance.

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