Fabric and a method of making the fabric

Inactive Publication Date: 2007-04-26
WL GORE & ASSOC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] The present invention is based on the realization that improved wicking of liquid from an inner face to an outer face of a fabric can be achieved by a fabric structure where the inner face of the fabric has a substantially uniform hydrophobicity and where the inner face is formed by hydrophobic yarn that is assemble

Problems solved by technology

This high surface energy brings positive benefits, but in some conditions, significant disadvantages.
However, in conditions where large amounts of sweat are excreted, liquid bridges are formed between the skin and fabric, thereby causing the fabric to stick and drag on the skin during movement, a phenomenon known as “wet cling”.
Cotton fabrics hold more liquid than equivalent fabrics of other fibers when saturated and therefore take significantly longer to dry.
In reality, control of the coating process described in the U.S. applic

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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  • Fabric and a method of making the fabric
  • Fabric and a method of making the fabric
  • Fabric and a method of making the fabric

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0137] This example demonstrates fabrication of a double knit fabric manufactured from hydrophilic cotton yarn for the outer face and hydrophobic cotton yarn for the inner face. Both yarns are first scoured and bleached using a conventional cotton procedure. This renders the surface of the cotton hydrophilic. The yarn to be used for the inner face of the fabric is then treated with Nuva TTC (Clariant) by an exhaust process using the apparatus and method described above to render it hydrophobic. The yarn package size used is 900 g wound to a density of 0.3 g / cc and the yarn is treated under the follows conditions:

Liquor ratio12:1Nuva TTC5%on mass of yarnSodium Sulphate8g / lStart temperature20°C.Finish temperature70°C.Temperature increase0.5°C. / minHold time at 70° C.15minLiquor flow cycle4minutes out-to-in,3minutes in-to-out

[0138] The liquor clears progressively during the treatment cycle and at the end of the treatment time, the liquor is completely clear, indicating that exhaustion...

example 2

[0142] This example is the same as Example 1, save for the step of curing the fabric being carried out after knitting and before the final scour to remove lubricant.

[0143] The fabric exhibits differential wicking behaviour that is retained for a minimum of 30 home laundry wash and tumble dry cycles. Washing is carried out at 60° C. using a 2A Cotton Cycle in accordance with ISO 6330 with ECE detergent, while tumble drying is carried out cool for 60 minutes.

example 3

[0144] This example is the same as Example 1, except for the softener / lubricant Sandolube SVN being co-applied with the hydrophobic agent atthe rate of 1% on mass of fiber during the yarn treatment step. The Sandolube replaces the paraffin knitting lubricant added during re-winding in Example 1.

[0145] The fabric exhibits differential wicking behaviour that is retained for a minimum of 30 home laundry wash and tumble dry cycles. Washing is carried out at 60° C. using a 2A Cotton Cycle in accordance with ISO 6330 with ECE detergent, while tumble drying is carried out cool for 60 minutes.

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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Abstract

The present invention is based on the realization that improved wicking of liquid from an inner face to an outer face of a fabric can be achieved by a fabric structure where the inner face of the fabric has a substantially uniform hydrophobicity and where the inner face is formed by hydrophobic yarn that is assembled in a manner that allows the liquid to penetrate between hydrophobic yarn and make contact with hydrophilic yarn that forms at least part of the outer face of the fabric. When liquid penetrates the inner face and makes contact with the hydrophilic yarn, liquid is able to be drawn through the inner face to the outer face of the fabric. Although the hydrophobic and hydrophilic yarns and may be made from any one or a blend of man-made or synthetic fibers, and natural fibers, it is preferred that the yarns and the fully formed fabric be made entirely of cotton fibers. The fabric is suitable for use in a wide range of applications including underwear. Another application involves laminating the fabric to a functional film such as a waterproof and/or windproof breathable membrane to produce functional outerwear garments.

Description

RELATED APPLICATIONS [0001] This application is a continuation-in-part of International Patent Application No. PCT / AU2005 / 001638, designating the United States, filed on Oct. 21, 2005, which claims the benefit of U.S. Provisional Application No. 60 / 621,943, filed on Oct. 22, 2004.FIELD OF THE INVENTION [0002] The present invention relates to a new fabric and a method of making the fabric that is capable of transferring liquid from an inner face to an outer face of the fabric by wicking. According to one particular preferred embodiment of the present invention, the fabric consists entirely of cotton fibers and is suitable for making sports garments or under garments that help keep a person dry and comfortable. BACKGROUND OF THE INVENTION [0003] Cotton fiber in its raw state is coated by naturally occurring waxes that make it hydrophobic. Once this coating is removed, by scouring for example, the fiber surface is strongly hydrophilic—more so than any non-cellulosic fiber. This high su...

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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IPC IPC(8): D03D23/00D03D15/00D04B1/22
CPCA41B17/00A41B2400/60D02G3/04D03D11/00D04B1/16D10B2403/0114A61F2013/00238A61F2013/51042A61F2013/51139D06M13/02D06M15/227D06M15/277D06M15/643D10B2201/02D10B2201/20D10B2211/02D10B2321/022D10B2321/041D10B2321/10D10B2331/02D10B2331/04D10B2331/10D10B2401/021D10B2401/022D10B2401/041D10B2501/00A61F13/513A61F13/51305A61F13/15577A41D31/12Y10T442/322Y10T442/3228Y10T442/3244Y10T442/3252Y10T442/45Y02P70/62D03D15/527D03D15/217
Inventor HOLCOMBE, BARRY VICTORBLANCHONETTE, IANEVANS, DAVID JOHNSTAYNES, LAURENCE MICHAELRIPPON, JOHN ANTHONYDENNING, RONALD JAMESSCHALDECKER, BIRGITKIESSLING, PETRA
Owner WL GORE & ASSOC INC
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