Protective film easy to recycle

Abstract

The invention discloses a protective film convenient for recycling, which comprises a polypropylene film, a pressure-sensitive modified EVA adhesive layer and a release material layer, and the pressure-sensitive modified EVA adhesive layer is located between the polypropylene film and the release material. Between the material layers; the pressure-sensitive modified EVA adhesive layer is composed of the following components: 100 parts of modified EVA aqueous solution, isooctyl acrylate, deionized water, tert-butyl peroxide 2-ethylhexyl carbonate , 4~6 parts of aziridine, polymethylphenylsiloxane, N-methylolacrylamide, triallyl isocyanurate, 1~2 parts of terpene resin, alkylphenol polyoxyethylene 0.5~2 parts of ether; 0.5~1 part of dimethyl sulfoxide. The protective film that is convenient for recycling realizes that the EVA adhesive layer has viscosity and pressure sensitivity at room temperature, and the pressure-sensitive modified EVA adhesive layer is an environmental protection water-based system, has no irritating smell, and is also convenient and easy to recycle. The protective film is reused and recycled, greatly reducing pollution.

Description

technical field [0001] The invention relates to a protective film, in particular to a protective film which is convenient for recycling. Background technique [0002] During the handling and use of materials such as glass, metal sheets, and plastic sheets, their surfaces are prone to contact pollution or scratches, so they are usually covered with a protective film to protect them from damage and pollution. The protective films used in the prior art are basically planar protective films, which usually include a substrate layer, an emulsion layer and a release layer. The base material layer is usually composed of polycarbonate, polyethylene, PET, directional stretched polypropylene or aromatic polyester. The base material layer is the main structural layer of the protective film; One side of the material layer, usually composed of alkoxysilane-containing polymers or acrylic polymers, is used to paste the base material layer on the surface of the object to be protected; and t...

AI Technical Summary

Problems solved by technology

In this way, this common flat protective film is composed of three layers, and the cost is relatively high, and as the humidity, temperature and other conditions of the surrounding environment change, the adhesive layer is prone to moisture or chemical reactions to cause the substrate layer to fall off; when needed When replacing or disposing of the original protective film, since the adhesive layer sticks to the object for a long time, there will be residual glue, which is not easy to handle; and in the process of producing and using the protective film, the chemical material of the adhesive layer and the release layer will produce a large amount of pollution, and the protective film cannot be recycled, which is not conducive to energy saving and environmental protection

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