Functional membrane, production method and fabric

A functional film and production method technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of moisture permeability gap, non-flammability, aggravated air pollution, etc. The effect of high water resistance, high air permeability and moisture permeability

Active Publication Date: 2013-04-10
TORAY SAKAI WEAVING & DYEING NANTONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This further exacerbated the pollution of the atmosphere, the deterioration of working conditions and the danger of fire
[0003] In order to solve the above problems, water-based resins have appeared in the market instead of solvent-based resins, especially water-based polyurethane, which has the advantages of non-toxicity, non-combustibility, and environmental friendliness, and has attracted more and more attention. The development trend in the field of moisture permeability, but there is still a certain gap between its moisture permeability and solvent-based
Disclosed a kind of water-based polyurethane film as Chinese invention patent CN101921536, this film has good functionality (water vapor transmission rate) and environmental protection (low VOC emission), but its water vapor transmission rate (ie moisture permeability) is only Can reach 1500~2000g / m 2 ·24 hours

Method used

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  • Functional membrane, production method and fabric
  • Functional membrane, production method and fabric
  • Functional membrane, production method and fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) preparation for liquid adjustment

[0033] First, dissolve 5g of sodium carboxymethylcellulose powder with a degree of substitution of 0.5 in 120g of water. After fully dissolving, mix and stir with 100g of water-based polyurethane resin. At the same time, add 0.5g of bridging agent and 0.5g of defoamer, and stir fully Finally, the coating resin liquid ① is formed.

[0034] (2) Preparation of functional film

[0035] Through the coating machine, use the prepared resin liquid ① on the surface of the release paper or release cloth to coat evenly, and then dry and cure in a continuous drying oven (70°C-90°C-130°C-150°C) to obtain Functional film with a thickness of 25 μm. Its performance is shown in Table 1.

Embodiment 2

[0037] (1) preparation for liquid adjustment

[0038] First, dissolve 5g of sodium carboxymethylcellulose powder with a degree of substitution of 0.9 in 120g of water. After fully dissolving, mix and stir with 100g of water-based polyurethane resin. At the same time, add 0.5g of bridging agent and 0.5g of defoamer, and stir fully Finally, a coating resin liquid ② is formed.

[0039] (2) Preparation of functional film

[0040] Through a coating machine, use the prepared resin liquid ② on the surface of the release paper or release cloth to evenly coat, and then dry and cure in a continuous drying oven (70°C-90°C-130°C-150°C) to obtain Functional film with a thickness of 25 μm. Its performance is shown in Table 1.

Embodiment 3

[0042] (1) preparation for liquid adjustment

[0043] First, dissolve 5g of sodium carboxymethylcellulose powder with a degree of substitution of 1.3 in 120g of water. After fully dissolving, mix and stir with 100g of water-based polyurethane resin. At the same time, add 0.5g of bridging agent and 0.5g of defoamer, and stir fully Finally, a coating resin liquid ③ is formed.

[0044] (2) Preparation of functional film

[0045] Through the coating machine, use the prepared resin solution ③ on the surface of the release paper or release cloth to evenly coat, and then dry and cure in a continuous drying oven (70°C-90°C-130°C-150°C) to obtain Functional film with a thickness of 25 μm. Its performance is shown in Table 1.

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Abstract

The invention discloses a functional membrane, a production method and a fabric using the functional membrane. The functional membrane is mainly formed by waterborne polyurethane resin and sodium carboxymethylcellulose, the thickness of the functional membrane is 5-50 micrometers, the water pressure resistance of the functional membrane is more than 5000mmH2O, and the moisture permeability of the functional membrane is 150000-250000g / m.24hr. The fabric, to which the functional membrane is attached, has higher water resistance, air permeability and moisture permeability, feels soft and is suitable for various outdoor sport suits.

Description

technical field [0001] The invention relates to a functional film, a production method and a fabric, in particular to a functional film, a production method of the functional film and a fabric using the functional film. Background technique [0002] With the improvement of people's living standards, consumers have put forward higher requirements for the comfort of clothing fabrics, especially in the fields of outdoor sports and waterproof and moisture permeability. In recent years, the demand has been in short supply. At present, the general waterproof and moisture-permeable products on the market are all made by coating with solvent-based resin or by using a film made of solvent-based resin and then laminating. However, whether it is through coating or film making, the resin must be dissolved by solvents. On the other hand, it is necessary to recover the discharged solvents during the drying and curing process. This further exacerbated the pollution of the atmosphere, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L1/28C08J5/18B32B27/12B32B27/18B32B27/40
Inventor 袁小飞张恒跃清水壮夫
Owner TORAY SAKAI WEAVING & DYEING NANTONG CO LTD
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