Yarns, high wear resistance fabrics and objects made therefrom

a technology of wear resistance and fabric, applied in the field of yarns, high wear resistance fabrics and objects made therefrom, can solve the problems of reducing the mechanical properties of fabrics containing cellulosic fibers, and it is difficult to obtain both in a fabric, so as to achieve good comfort or wear, good abrasion and tear resistance, good balance

Inactive Publication Date: 2010-12-30
LENZING AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]It is an object of the present invention to provide a fabric which has a good balance between comfort for the wearer of garments made from the fabric and a good abrasion and tear resistance. Obtaining a good level of either comfort or wear and tear resistance is something which is easily done. It is however much more difficult to obtain both in a fabric, as the fabric properties required for good comfort and the fabric properties required for good wear and tear resistance are often mutually exclusive.
[0016]Known FR finishes usually significantly reduce the mechanical properties of fabrics containing cellulosic Fibers. It is therefore still a further preferred object to produce a fabric which can be treated with a flame retarding (“FR”) finish, e.g. Proban®, without losing too much strength and abrasion resistance.

Problems solved by technology

It is however much more difficult to obtain both in a fabric, as the fabric properties required for good comfort and the fabric properties required for good wear and tear resistance are often mutually exclusive.
Known FR finishes usually significantly reduce the mechanical properties of fabrics containing cellulosic Fibers.

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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  • Yarns, high wear resistance fabrics and objects made therefrom

Examples

Experimental program
Comparison scheme
Effect test

examples 1 to 6

[0047]Commercially available PA-6.6 staple fibers with a titer of 2.0 dtex and 38 mm cut length were mixed in the ratios described in table 1 with commercially available TENCEL® staple fibers with a titer of 1.4 dtex and 38 mm cut length and spun to a yarn of Nm 1 / 26 (Ne 1 / 15).

[0048]The yarns were further processed by weaving a 2×1 twill with a weight of 249 g / m2 and 32 ends and 24 picks. The woven fabrics were then singed, desized, scoured, dried, heat set at 205° C., printed to meet the IR reflectance specifications from military and finished with an FC water repellent. These methods are well known to anyone skilled in the art.

[0049]The tear strength in the warp as well as in the weft direction was measured and the Martindale test was applied to each so-finished fabric.

TABLE 1RatioTenacityTearTearTencel / PAyarnstrengthstrengthMartindaleExample6.6 [w / w][cN / tex]warp [N]weft [N][rubs]1100 / 0 25.4183020.000290 / 1024.0253265.000380 / 2023.32642>100.000470 / 3022.02840>100.000560 / 4020.92842>10...

example 7 to 9

[0052]2×1 twills were made out of a Ne 1 / 15 yarn containing a mixture Tencel / PA-6.6 70% / 30% (w / w) of fibers according to example 1. Weight and finish varied according to Table 2, but the process steps were the same as in Examples 1 to 6.

[0053]In example 8a conventional Proban® treatment was applied afterwards. In example 9a different fabric construction was made, but by using the same yarns as in example 7.

TABLE 2FabricTearTearConstructionweightstrengthstrengthMartindaleExample[ends / picks][g / m2]warp [N]weft [N][rubs]Remark739 / 222053527>100.000—839 / 222052721>100.000Proban FRfinish930 / 201793631>100.000Lighterweight

[0054]It can be seen that all three fabrics according to the invention fulfill the U.K. Military specification of 28 cN (warp), 20 cN (weft) and 45.000 Martindale rubs. The fabric of example 8 also passed the flame retardant test of EN 532.

example 10

[0055]A 2×1 ripstop twill with 30 ends / 22 picks and 180 g / m2 was made from the 70 / 30 yarn of example 4 but with a 350f / 136 nylon filament ripstop thread as every ninth pick. Table 3 shows the comparison with the U.K. military specification for ripstop fabric.

TABLE 3Tear strengthTear strengthMartindaleAir permeabilityExamplewarp [N]weft [N][rubs][l / m2 s]Specification256030.0002001039>50 unable>100.000415to tear

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Abstract

The invention relates to yarns and fabrics containing nylon staple fiber and high-tenacity man-made cellulosic staple fiber, and garments made therefrom, and has particular reference to fabrics having a high resistance to wear whilst retaining a high comfort level.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to yarns and fabrics containing nylon staple fiber and high-tenacity man-made cellulosic staple fiber, and objects like garments, beddings or upholstery made therefrom, and has particular reference to fabrics having a high resistance to wear whilst retaining a high comfort level.[0003]2. Description of Related Art[0004]Certain forms of workwear, including that for use in conditions of high abrasion, have been found to wear very quickly. This is particularly true for workwear intended for use in sandy conditions. It is known that cellulosic fibers such as cotton, viscose rayon or Lyocell can be made into garments which have a high level of comfort. This is because the garments absorb moisture and have a cool comfortable touch. However cellulosic pure garments do not have a very high level of abrasion resistance.[0005]Abrasion resistance in fabrics and garments is measured by the Martindale test 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 Applications(United States)
IPC IPC(8): D03D15/00D03D1/00D02G3/02
CPCD02G3/045D02G3/442D03D1/0041D03D15/00D03D15/0027D10B2201/02D10B2505/08D10B2201/22D10B2201/24D10B2331/02D10B2401/063D10B2501/00D10B2201/20Y10T442/438Y10T442/3976Y10T428/249921Y10T442/2631Y10T442/313D03D15/47D03D15/225D03D15/573D03D15/283D01F8/12D03D1/00D04B1/14D10B2503/06D10B2503/00D01F2/00D02G3/446D03D13/00D10B2501/04D10B2505/12D10B2503/062
Inventor CRNOJA-COSIC, MARINATAYLOR, JAMES MARTIN
Owner LENZING AG
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