Hygro materials for use in making yarns and fabrics
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 fibers. 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 air 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.
1. A process for preparing a fabric comprising:
a) forming a water-soluble sliver;
b) forming an outer cotton sliver;
c) forming a roving by guiding the water-soluble sliver into a middle of the outer cotton sliver on a speed frame;
d) twisting the roving so that the outer cotton sliver wraps around the water-soluble sliver;
e) spinning the twisted roving on a ring spinning frame into a yarn; and
f) weaving the yarn into a fabric.
2. The process of claim 1 , further comprising dissolving the core sliver of the yarn in water at a temperature from about 50° C. to about 110° C.
3. The process of claim 1 , further comprising feeding the water-soluble sliver through a condenser before the step of forming a roving.
4. The process of claim 1 , wherein the water soluble sliver is polyvinyl alcohol (PVA).
5. The process of claim 4 , wherein the water soluble sliver is prepared by a process comprising the steps of:
a) carding the PVA fibers; and
b) drawing the fibers on a draw frame to form the water-soluble sliver.
6. The process of claim 4 , wherein the PVA fibers have a thickness of between about 0.9 denier and about 2.2 denier.
7. The process of claim 4 , wherein the water-soluble sliver has a hank of between 0.05 and 0.40.
8. The process of claim 4 , wherein the water-soluble sliver has a cut length of between 32 mm and 51 mm.
9. The process of claim 4 , wherein the PVA sliver is present in an amount of between about 8% to about 25% by weight of the yarn.
10. The process of claim 1 , wherein the roving is twisted with a Z twist or an S twist.
11. The process of claim 1 , wherein the fabric is a hygro fabric.