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Method for producing waterproof and drench typed artificial leather made from imcroporous membrane of Teflon

A polytetrafluoroethylene and microporous film technology, applied in textiles and papermaking, etc., can solve the problems of poor air permeability, water pressure resistance, poor function, etc., and achieve the effects of high moisture permeability, high water pressure resistance, and low cost.

Inactive Publication Date: 2006-09-20
SOLDIER SYST RES CENT MILITARY SUPPLY EQUIP INST GENERAL LOGISTICS DEPT PLA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing artificial leather is made of polyester or other base fabric coated with polyurethane. This kind of artificial leather often has contradictions in air permeability and waterproof, that is, when the air permeability is good, the water pressure resistance is poor; when the water pressure resistance is high, the air permeability is poor.
Clothing or shoes made of such faux leather tend to be less functional

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Waterproof and moisture-permeable artificial leather of the present invention can also be called PTFE film artificial leather, and its concrete processing method is:

[0012] a. Add solvent into the material tank, start the agitator to stir at high speed, the speed of the mixer is 500-1000 rpm, make the solvent vortex in the material tank, gradually add polyurethane granules, the solid content of the polyurethane granules is 20- 60%, make it suspended in the solvent vortex, add diluent after the polyurethane particles are dissolved, and dilute to 10-30% to make a polyurethane solution, coat the polyurethane solution on the release paper, and then double-draw The stretched polytetrafluoroethylene microporous film is laminated with the release paper coated with polyurethane solution, and dried after being pressurized by a pressure device. After drying, the release paper and the polytetrafluoroethylene microporous film are bonded Peel off to obtain polyurethane-polytetrafl...

Embodiment 2

[0016] The processing method of waterproof and moisture-permeable artificial leather of the present invention is:

[0017] a. Add dimethylformamide and pigments into the material tank, stir at high speed (500-1000rpm), make the solvent vortex in the material tank, gradually add polyurethane granules (polyurethane solid content reaches 40%), make it in the solvent Vortex to suspend, dissolve and add butanone to dilute to 18%. A polyurethane solution is made, and the polyurethane solution is coated on a release paper. Then, the biaxially stretched polytetrafluoroethylene microporous film is laminated with release paper coated with polyurethane solution, and dried at 160° C. after pressurization to obtain a polyurethane-polytetrafluoroethylene bidirectional elastic film.

[0018] b. Using slurry dot sizing, transfer the polyamide adhesive to the polyurethane-polytetrafluoroethylene bidirectional elastic film, and then compound the knitted fabric with the polyurethane-polytetrafl...

Embodiment 3

[0020] The processing method of waterproof and moisture-permeable artificial leather of the present invention is:

[0021] a. Add dimethylformamide and pigments into the material tank, stir at high speed (500-1000rpm), make the solvent vortex in the material tank, gradually add polyurethane granules (polyurethane solid content reaches 40%), make it vortex in the solvent Suspend in medium, add methyl ethyl ketone after dissolving, dilute to 18%. Make a polyurethane solution, coat the polyurethane solution on the release paper, then bond the biaxially stretched polytetrafluoroethylene microporous film with the release paper coated with the polyurethane solution, pressurize and place on Dry at 160°C to prepare polyurethane-polytetrafluoroethylene bidirectional elastic film.

[0022] b. Using polyester hot-melt non-woven fabric, compounding polyurethane-polytetrafluoroethylene bidirectional elastic film and knitted fabric, drying at 130°C to prepare PTFE film artificial leather w...

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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PUM

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Abstract

A water-proof moisture-permeable artificial leather is prepared through coating the solution of polyurethane onto parting paper, posting it onto the bidirectionally stretched millipore teflon film, baking, and adhering it into surface of fabric. It has 8431 g / sq.m 24 hr for moisture permeability and 83 Kpa for water pressure resistance.

Description

technical field [0001] The invention relates to a method for processing polytetrafluoroethylene microporous film waterproof and moisture-permeable artificial leather. The method is to compound polyurethane-polytetrafluoroethylene bidirectional elastic film and cloth to prepare artificial leather with waterproof and moisture-permeable characteristics. Background technique [0002] Existing artificial leather is made of polyester or other base fabric coated with polyurethane. This artificial leather often has contradictions in air permeability and waterproof, that is, when the air permeability is good, the water pressure resistance is poor; when the water pressure resistance is high, the air permeability is poor. Clothing or shoes made of such artificial leather tend to be less functional. PTFE microporous film waterproof and moisture-permeable laminated product is a high-tech product integrating waterproof, moisture-permeable and windproof functions. The thickness of the fil...

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 Patents(China)
IPC IPC(8): D06N3/04
Inventor 张建春郭玉海郝新敏王锋
Owner SOLDIER SYST RES CENT MILITARY SUPPLY EQUIP INST GENERAL LOGISTICS DEPT PLA
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