Manufacturing method of cyclic utilization type pressure-sensitive adhesive tape

Abstract

The invention discloses a manufacturing method of cyclic utilization type pressure-sensitive adhesive tape. A modified EVA aqueous solution of the adhesive tape is obtained through the following steps that 1, polyvinyl alcohol, sodium iso-octoate, a potassium sulfite salt and ferrous sulfate are dissolved in ionized water to form a water-based mixture; 2, the water-based mixture in the first step is put into a high pressure kettle, and ethylene is introduced to replace air in the high pressure kettle; 3, materials in the reaction kettle are heated to the reaction temperature of 80 DEG C and stirred, and monomer vinyl acetate, acrylic acid, dicumyl peroxide, tert-butyl hydroperoxide and sodium metabisulphite are injected in sequence; 4, cooling is conducted to below 40 DEG C to form the modified EVA aqueous solution. According to the manufacturing method of the cyclic utilization type pressure-sensitive adhesive tape, by means of an environment-friendly protective film, an EVA adhesive layer has viscidity and compression sensitivity at normal temperature, reutilization and recovery of the environment-friendly protective film are convenient, and adhesion of the modified EVA adhesive layer and polypropylene film is improved.

Description

technical field [0001] The invention relates to a protective film, in particular to a manufacturing method of a recyclable pressure-sensitive adhesive tape. 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...

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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