Dry Microporous Coating Manufacturing Technology and Microporous Coating Fabric Production Technology

A manufacturing process and microporous technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of high price, high abnormality rate, and large fabric damage

Active Publication Date: 2021-07-06
FUJIAN SUNTION TEXTILE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wet microporous is mainly to coat polyurethane on the fabric, then dissolve DMF in water through a water tank, and then dry it. In this process, the solvent used is DMF, which has a stronger impact on the environment than MEK, TOL, etc. , and because of the strong polarity of DMF itself, the damage to the fabric will be greater, so that the tear strength of the fabric will be greatly reduced
At present, the dry microporous is mainly through the release paper film drawing method and the direct coating method. The release paper film drawing method includes two kinds of polytetrafluoroethylene film and polyurethane film. The price of polytetrafluoroethylene film is high, while the current price of polyurethane film is Water pressure moisture permeability is also relatively unstable, the abnormal rate is high, and the cost is relatively high
At present, in the dry microporous direct coating process, the microporous rubber material is unstable, prone to skinning, and the emulsification effect is not complete, so that the rubber material is prone to delamination when it is operated on the glue machine.

Method used

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  • Dry Microporous Coating Manufacturing Technology and Microporous Coating Fabric Production Technology

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Embodiment Construction

[0029] Below in conjunction with specific embodiment, this case is described in further detail.

[0030] This case involves a new dry-process microporous coating manufacturing process, including (1) the step of preparing a polyurethane resin mixed solution and (2) the step of gluing, in which:

[0031] (1) The preparation step of polyurethane resin mixed solution, the solution formula is in parts by mass: 100 parts of microporous polyurethane resin, 8-10 parts of ammonia water, 30-35 parts of polyacrylic resin mixed solution, 2.5-3.5 parts of water repellent, TOL / h 2 60-70 parts of O mixed solution; the ammonia water adopts 5%-8% concentration ammonia water, and the polyacrylic resin mixed solution is a mixed solution composed of polyacrylate and toluene with a mass fraction ratio of 28:5, TOL / H 2 The O mixture is TOL and H with a concentration ratio of 1:10 2 A solvent mixture composed of O;

[0032] Example 1 of the solution formula, the solution formula in parts by mass...

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Abstract

The invention discloses a dry-process microporous coating production process and a microporous coating fabric production process, including (1) a polyurethane resin mixed solution preparation step and (2) a gluing step, mainly for the polyurethane resin mixed solution during coating The preparation and gluing steps are innovatively designed, and the prepared polyurethane resin mixed solution is stable and has complete emulsification effect. According to TOL / H 2 The boiling point of O mixed solution is different, and at different temperatures, the volatilization rate is different to form holes, which can well avoid skinning and layering after gluing, and bring excellent effects of water pressure moisture permeability stability. In addition, the entire comparison material does not use DMF, avoiding the above-mentioned various disadvantages caused by DMF, and reducing production costs.

Description

technical field [0001] The invention relates to fabric coating technology, in particular to a new dry-process microporous coating production process and a microporous coated fabric production process. Background technique [0002] At present, there are two main methods of moisture permeability of fabrics. One is hydrophilic moisture permeability, which mainly uses hydrophilic groups (-COO, -NH2) to adsorb-release- the H2O vapor molecules from high pressure to low pressure. The method of adsorption is transmitted to the outside of the body. This method of moisture permeability is relatively slow. The moisture permeability is greatly affected by the temperature and humidity of the environment, and the surface of the rubber is wet when it encounters water, which seriously affects the wearing comfort and appearance. Another method is microporous moisture permeability, which mainly makes the polyurethane rubber surface form holes with a diameter of d (0.4*10-9m<d<10*10-6m),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/04D06N3/00D06P1/39
CPCD06N3/0006D06N3/0034D06N3/005D06N3/0063D06N3/0077D06N3/042D06N3/144D06N2209/142D06N2209/1664D06P1/39
Inventor 张汉洪杜国海谢云峰
Owner FUJIAN SUNTION TEXTILE SCI & TECH
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