Production process of fluoride-free waterproof breathable knitted fabric

Abstract

The invention provides a production process of a fluoride-free waterproof breathable knitted fabric. The production process comprises the following steps of: (1) raw material preparation: weaving a gray cloth with single side being of a fleece tissue structure; (2) preprocessing: preprocessing the gray cloth, wherein the processing liquid contains 1.2-1.7g / L of low-temperature scouring and bleaching agents, 1.8-2.2g / L of hydrogen peroxide activating agent, 1.8-2.2g / L of anti-creasing agent, 6-7g / L of hydrogen peroxide and 3.5-4.5g / L of caustic soda liquid; (3) dyeing: dyeing the gray cloth, wherein the dyeing liquid contains 7-9% of anhydrous sodium sulphate and 0.5-0.7% of substitutive soda by weight percent; (4) drying: drying the gray cloth; and (5) setting and finishing: setting the gray cloth in a setting machine, wherein a waterproof finishing agent in the finishing liquid is organic silicone emulsion and a catalyst is an emulsifier. The produced fabric has better breathability and wear and use durability, is aired at room temperature after being washed, without high temperature drying and ironing maintenance and overcomes the defect that the common waterproof and oilproof fabrics have poor breathability and stability and need high temperature drying and ironing maintenance after being washed.

Description

technical field [0001] The invention relates to a production process of a fluorine-free waterproof breathable knitted fabric. Background technique [0002] With the development of modern society and the continuous improvement of people's living standards, various comfort properties, appearance properties and special properties of textiles have been paid more and more attention. Some new textiles after special finishing can provide people with various excellent functions to meet the requirements of special purposes. Waterproof and breathable finishing of knitted fabrics is one of them. There are three traditional finishing methods for waterproof knitted fabrics: (1) Coating on the surface of the fabric, such as polyvinyl chloride resin coating and polyurethane resin coating. The disadvantage of coating finishing is that it has no air permeability; (2) Composite lamination, such as tetrafluoroethylene laminated fabric, this waterproof and breathable membrane adopts the princi...

AI Technical Summary

Problems solved by technology

There are three traditional finishing methods for waterproof knitted fabrics: (1) Coating on the surface of the fabric, such as polyvinyl chloride resin coating and polyurethane resin coating. The disadvantage of coating finishing is that it has no air permeability; (2) Composite lamination, such as tetrafluoroethylene laminated fabric, this waterproof and breathable membrane adopts the principle of micropores, and the clothing made of it is easy to block the micropores during wearing, resulting in no breathability or enlarged micropores , the waterproof and breathable function will become worse after washing for 5 times; (3) It is finished with fluorocarbon water repellent agent, which can achieve a medium degree of oil repellency and has little effect on the air permeability of the fabric, but this kind of clothing fabric is not easy to be washed After wearing, it needs to be dried at high temperature or ironed to maintain its waterproof and breathable performance

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