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Breathable waterproof fabrics with a dyed and welded microporous layer

A technology of fabric layers and composite fabrics, applied in the direction of fabrics, textiles, protective clothing, etc., can solve the problems of e-PTFE fracture, easy generation of errors/garbage, clothing manufacturing failure, etc.

Active Publication Date: 2011-07-06
DUPONT SAFETY & CONSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technique can also be slower and more prone to error / garbage than regular seams without e-PTFE
In addition, the seam welding process and the elevated temperature of the e-PTFE can cause "cracks" within the e-PTFE, resulting in failure of the final garment manufacture

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

[0036] In Example 1, using a "288 pattern" gravure roll to apply a pressure of 60 psi, a nylon grid (basis weight 100 gsm), nanofibrous web (made of nylon 6,6) and Three-layer fabric construction of nylon mesh material.

[0037] In Example 2, a "288 pattern" gravure roll was used to apply a pressure of 60 psi, and a solvent-based polyurethane adhesive was used to prepare nylon grid cloth (basis weight 100 gsm), nanofiber web (made of nylon 6,6) and Three-layer fabric construction of nylon tricot material (basis weight 35gsm). Then use SeamMaster TM Ultrasonic bonding of the final three-ply construction with various suture types to include flat, reinforced, and curved sutures.

[0038] Then, using an Instron tensile machine and a 25.40 mm wide sample, the breaking strength, elongation at maximum load, percent elongation at break, modulus of elasticity, tensile strength, and energy of. The load cell used is 5kN. Also tested Zero Single stitch seam on the Golf Outerwear ve...

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Abstract

The present invention discloses a composite wind barrier fabric having the ability to maintain a high MVTR while controlling air permeability. The fabric has a nanofiber layer optionally welded to, and in a face-to-face relationship with, a fabric layer. Optionally a second fabric layer is welded adjacent to and in a face-to-face relationship with the nanofiber layer and on the opposite side of the nanofiber layer to the first fabric layer. The fabric has a Frazier air permeability of no greater than about 25 cfm / ft<2>, and an MVTR per ASTM E-96B method of greater than about 500 g / m<2> / day. The nanofiber layer is welded to the fabric layer over a portion of its surface.

Description

field of invention [0001] The present invention relates to multilayer fabrics with moisture and moisture management and garments incorporating such fabrics. The invention as claimed and disclosed has particular application in garments. Background of the invention [0002] Protective clothing worn in rain and other wet conditions should be able to keep the wearer dry by preventing moisture from penetrating into the garment and by allowing perspiration to evaporate from the wearer into the atmosphere. "Breathable" materials that do allow sweat to evaporate tend to get soaked by rain, so they can't be truly waterproof. Tarpaulins, polyurethane-coated fabrics, PVC films, and other materials are waterproof but do not provide satisfactory evaporation of sweat. [0003] Fabrics that have been treated with silicone, fluorocarbon, and other water repellents generally allow perspiration to evaporate but have limited repellency; water penetrates these fabrics at very low pressure and...

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): A41D31/02D04H13/00
CPCA41D2500/30D04H13/007A41D31/02D04H13/002A41D2400/22D04H1/56D04H1/728A41D31/102Y10T442/2139D04H1/43838
Inventor J·A·孔利J·R·古克特R·A·梅林G·B·帕尔默四世
Owner DUPONT SAFETY & CONSTR INC