Making materials of coated paper

Coated paper is a kind of composite material coated with plastic particles on the surface of paper by tape casting machine. The main feature of coated paper is that the composite material can be oil proof, waterproof (relative) and heat sealing. Different uses take its different characteristics: when used to pack hamburger, take its oil proof characteristics. McDonald's is 80 degrees of edible vegetable oil, 10 minutes no oil leakage. When used in coated paper packaging, take its waterproof characteristics. When used in automatic packaging machine packaging, take its heat sealing characteristics.