Hygro yarns for use in making fabrics

Patent metadata

Field	Value
Publication number	US-9677201-B2
Application number	US-201414274680-A
Country	US
Kind code	B2
Filing date	May 10, 2014
Priority date	Oct 17, 2005
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A process is described wherein pile yarn is woven with cotton weft and warp yarns to produce terry fabrics, such as towels. The fabric is then washed in warm water to dissolve the PVA fiber. The amount of fibers dissolved, depends upon the count of the yarn or yarns used. By dissolving the PVA fibers, a hollow air space is produced throughout the pile yarn, corresponding to an increase in the air space in the pile yarn. By increasing the in space in the pile yarn, the resulting towels are softer and bulkier than standard cotton towels. The present invention further relates to pile yarn in terry woven fabric (warp yarn), or weft yarn, in the case of flat fabrics.

First claim

I claim:

1. A method for making a yarn, comprising:
(a) forming a plurality of slivers comprising,
(i) a first sliver made from one of cotton; blends of polyester and cotton; blends of polyester and viscose; blends of cotton and modal; blends of cotton; silk and modal; blends of cotton and bamboo; blends of cotton and sea weed fibers; blends of cotton and silver fibers; blends of cotton and charcoal fibers; and any combination thereof, and
(ii) a water-soluble sliver made from water-soluble fibers;

(b) forming a roving from the plurality of slivers, comprising forming a twist in the roving by wrapping the plurality of slivers such that the water-soluble sliver forms a core of the roving, and such that a sheath is formed around the core, the sheath comprising the first sliver; and
(c) spinning the roving into a yarn.

2. The method of claim 1 , wherein the spinning of the roving is performed using a ring spinning frame.

3. The method of claim 1 , wherein the forming of the roving is performed using a speed frame.

4. The method of claim 3 , wherein the forming of the twist in the roving is performed using the speed frame.

5. The method of claim 1 , wherein the forming of the twist comprises forming a Z or S twist in the roving.

6. The method of claim 1 , wherein the first sliver comprises cotton fibers, and wherein the method further comprises forming the first sliver by carding the cotton fibers and drawing the cotton fibers on a draw frame.

7. The method of claim 1 , further comprising forming the water-soluble sliver by carding polyvinyl alcohol (PVA) fibers and drawing the PVA fibers on a draw frame.

8. The method of claim 1 , further comprising winding the yam into a package on an autoconer.

9. The method of claim 1 , further comprising dissolving the water-soluble fibers.

10. The method of claim 1 , wherein only the water-soluble fibers of the water-soluble sliver define the core of the yarn.

11. The method of claim 10 , wherein the yarn includes a Z or S twist.

12. The method of claim 10 , wherein the water-soluble fibers comprise polyvinyl alcohol (PVA) fibers.

13. The method of claim 12 , wherein the PVA fibers are present in an amount of between about 8% to about 25% by weight of the yam.

14. The method of claim 10 , wherein the yarn forms part of a fabric.

15. A method for making a pile yarn, comprising:
(a) forming a plurality of slivers comprising,
(i) a water-soluble sliver made from water-soluble fibers, and
(ii) a second sliver comprised of at least one of cotton; cotton blends; silk fibers; modal fibers; acrylic fibers; blends of cotton and bamboo; blends of cotton and sea weed fibers; blends of cotton and silver fibers; and blends of cotton and charcoal fibers,

(b) forming a roving from the plurality of slivers, comprising forming a twist in the roving by wrapping the plurality of slivers such that the water-soluble sliver forms a core of the roving, and such that the second sliver forms a sheath around the core; and
(c) spinning the roving into a yarn.

16. The method of claim 15 , wherein only the water-soluble fibers from the water-soluble sliver define the core of the yarn.

17. The method of claim 15 , wherein the yarn forms part of a fabric.

18. A method for making a yam for use as a warp yarn or a weft yarn, comprising:
(a) forming a plurality of slivers comprising,
(i) a water-soluble sliver made from water-soluble fibers, and
(ii) a second sliver comprised of at least one of cotton; blends of polyester and cotton; blends of polyester and viscose; blends of cotton and modal; blends of cotton; silk and modal; blends of cotton and bamboo; blends of cotton and sea weed fibers; blends of cotton and silver fibers; and blends of cotton and charcoal fibers,

(b) forming a roving from the plurality of slivers, comprising forming a twist in the roving by wrapping the plurality of slivers such that the water-soluble sliver forms a core of the roving, and such that the second sliver forms a sheath around the core; and
(c) spinning the roving into a yarn.

19. The method of claim 18 , wherein only the water-soluble fibers from the water-soluble sliver define the core of the yarn.

20. The method of claim 18 , wherein the yarn forms part of a flat fabric.

Assignees

• Welspun India Ltd

Inventors

• Mandawewala Rajesh R

Classifications

• D10B2501/00

  Wearing apparel · CPC title

• D06B3/10

  of fabrics (D06B3/24, D06B3/28, D06B3/32 take precedence; jiggers D06B3/32) · CPC title

• D10B2201/02

  Cotton · CPC title

• D02G3/406

  where the polymeric solution is removable at a later stage, e.g. by washing · CPC title

• D10B2509/026

  Absorbent pads; Tampons; Laundry; Towels · CPC title