Woven bag coating, preparation method, coating method and woven bag

Abstract

The invention provides a woven bag coating, a preparation method, a coating method and a woven bag, and solves the problems that in the prior art, when the cement laminating plastic woven bag is prepared, the problem of air exhaust needs to be solved by punching on plastic woven cloth coated with a coating film, but the phenomena of running, overflowing and ash leakage exist during filling when punching is carried out, and damping is prone to being caused in the later period. The woven bag coating is prepared from the following raw materials including, by weight, 2%-15% of low-density polyethylene, 40%-70% of special grade polypropylene, 30%-60% of first-grade polypropylene, 0.3%-0.5% of a whitening agent, 2%-10% of a master batch, 0.2%-0.5% of an anti-reflection master batch, 0.05%-0.1% of a cooling master batch and 0.5%-1% of paraffin, wherein the sum of the weight percentages of the raw materials is 100%. The preparation method is used for preparing the cement woven bag, and the woven bag is good in exhaust effect, high in tensile strength and good in moisture resistance.

Description

technical field [0001] The invention relates to a coating, in particular to a woven bag coating, a preparation method, a coating method and a woven bag. Background technique [0002] Coating is a term in the process of making woven bags. Its principle is to apply resin to plastic woven cloth in a molten state. Only apply the molten resin to the plastic woven cloth and cool it immediately to obtain a two-in-one woven cloth, which is a laminated plastic woven bag. However, coating a layer of plastic film on the plastic woven cloth will cause airtightness and greatly reduce the exhaust performance. [0003] In the process of using the compound film plastic woven bag, the existing cement enterprises generally use the rotary air pressure packaging machine to put the cement tank into the compound film plastic woven bag through the air pressure. The bag output of the domestic cement factory after filling will basically reach 60-120 tons / hour. Under this premise, the cement packa...

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of woven bag paint and preparation method, coating method and woven bag, to solve the problem that the plastic woven bag after being coated with the coating film needs to be prepared when the cement-coated plastic woven bag is prepared in the prior art. The problem of exhaust is solved by punching holes on the cloth, but there are technical problems such as running, popping, and ash leakage during filling, and easy to be damp in the later stage.

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