Pre-coated base film

Abstract

The invention discloses a pre-coated base film, and belongs to the field of polymer composites. The pre-coated base film is composed of a base material and a hot melt adhesive layer, wherein a polyester film is taken as the base material; the hot melt adhesive layer is composed of the following components in parts by weight: 100 parts of low density polyethylene, 10 to 20 parts of ethylene-vinyl acetate copolymer, 1 to 3 parts of silicon dioxide, 20 to 40 parts of rosin, 2 to 6 parts of polyethylene wax and 0.07 to 0.3 part of antioxidant. The pre-coated base film has a thin and transparent characteristic and is high in barrier property and smooth and bright in surface, so that the glossiness and the fastness of a printed product are improved. The pre-coated base film is rich in stereoscopic impression and has the advantages of water resistance, fouling resistance, abrasion resistance and chemical corrosion resistance. Thus, the pre-coated base film disclosed by the invention can be widely applied to the markets of publication printing products and various packaging products.

Description

[0001] technical field [0002] The invention belongs to the field of polymer composite materials, in particular to a precoated base film. Background technique [0003] Solvent-based instant-coating technology is gradually replaced by water-based instant-coating technology because the benzene solvent used will cause serious harm to the health of producers and consumers. Water-soluble instant-coating technology has pollution problems that require a large amount of water to clean and discharge cleaning sewage , is still not the most ideal environmental protection film solution, at the same time, it still has some defects in product quality and production efficiency. [0004] The pre-coating film is a non-polluting, high-viscosity, environmentally-friendly coating material that is compounded by hot-melt adhesive or low-temperature resin and film substrate through special equipment. It can be directly adhered to the surface of the article through special coating equipment during...

AI Technical Summary

Problems solved by technology

[0003] Solvent-based instant-coating technology is gradually replaced by water-based instant-coating technology because the benzene solvent used will cause serious harm to the health of producers and consumers. Water-soluble instant-coating technology has pollution problems that require a large amount of water to clean and discharge cleaning sewage , is still not the most ideal environmental protection film solution, at the same time, it still has some defects in product quality and production efficiency