Processing method of polyvinyl chloride coated tarpaulin

Abstract

The invention provides a processing method of polyvinyl chloride coated tarpaulin, and relates to the technical field of tarpaulin. The processing method comprises the following steps that (1) size isprepared, specifically, polyvinyl chloride paste resin, dioctyl phthalate, polyurethane, a viscosity reducer and tributyl phosphate are mixed and beat to obtain the size A; (2) cloth is fed and coated with the size, specifically, after the polyester mesh cloth is pressed and rolled, the surface layer and the bottom layer of the polyester mesh cloth are uniformly coated with the size A; (3) dryingis carried out, specifically, the polyester mesh cloth coated with the size A is dried; (4) film preheating is carried out, specifically, a polyvinyl chloride film is heated to be in a molten state;(5) laminating is carried out, specifically, the polyvinyl chloride film in the molten state and the polyester mesh cloth coated with the size are heated, pressurized and laminated to prepare the coated tarpaulin; and (6) cooling and shaping are carried out, specifically, the coated tarpaulin is cooled to obtain the finished product. The method is simple and efficient, and the prepared polyvinyl chloride coated tarpaulin is high in peel strength among all layers and excellent in water seepage resistance, cold resistance, sun shading performance, weather resistance and the like.

Description

technical field [0001] The invention relates to the technical field of tarpaulins, in particular to a processing method for polyvinyl chloride coated tarpaulins. Background technique [0002] Polyvinyl chloride tarpaulin is a kind of high-strength polyester canvas as the base cloth, coated with polyethylene paste resin, and then mixed with various chemical additives such as accelerator, anti-fungal agent, anti-aging agent, antistatic agent, etc. , a tarpaulin plasticized at high temperature. Compared with ordinary PE or PP tarpaulin, PVC tarpaulin has better rain resistance and wider application range. It is widely used in automobiles, trains, container roofs, aquaculture and anti-seepage. Therefore, it is particularly important to find a polyvinyl chloride tarpaulin with simple and efficient preparation method and high quality. However, the existing polyvinyl chloride tarpaulin produced by the scraping method usually has the following problems: (1) the molecular differenc...

AI Technical Summary

Problems solved by technology

However, the existing polyvinyl chloride tarpaulin produced by the scraping method usually has the following problems: (1) the molecular difference between the polyvinyl chloride paste and the polyester mesh is relatively large, and the peel strength is low, and the seam peel strength of the finished product after welding Low; (2) The polyvinyl chloride paste for coating and scratching has a large air bubble content, resulting in many air bubbles in the finished product, low water-proof performance, and poor air tightness

However, the paste-like PVC cloth in this patent has relatively poor stability, and lacks weather resistance and sunshade performance.

[0005] Aiming at the problems of the processing method of polyvinyl chloride tarpaulin, such as complex process, raw materials and relatively poor performance, it is urgent to find a simpler and more efficient tarpaulin processing method, so that the polyvinyl chloride prepared by this method The tarpaulin has excellent performances such as anti-seepage, cold resistance, sunshade and weather resistance.

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