Ring spun yarn and method

Patent metadata

Field	Value
Publication number	US-11359309-B2
Application number	US-201916668460-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Dec 21, 2018
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A method of ring spinning cotton polyester blended yarn. The method is robust and can be used to manufacture the yarn even from polyester fibers that are produced from recycled materials. A new ring spun cotton polyester yarn is also provided. The yarn has few defects and can be effectively dyed when woven into cloth.

First claim

What is claimed is:

1. A method of manufacturing colored cloth that is free of undyed specs from recycled polyester and cotton blended yarn comprising steps of:
providing cotton bales;
opening the cotton bales and mixing cotton fibers from at least two bales;
carding the cotton fibers to form cotton slivers;
drawing the cotton slivers to straighten the cotton fibers in the cotton slivers;
combing the cotton slivers and removing the shortest cotton fibers from the cotton slivers, wherein after the combing step at least ninety percent of the cotton fibers forming the cotton slivers has a length of between 12 millimeters and 44 millimeters;
providing polyester bales, wherein the polyester bales include polyester fibers derived from recycled polyester, wherein at least ninety percent of the polyester fibers are between 30 millimeters and 33 millimeters long and have a linear density of between 1.1-1.3 denier;
carding the polyester to form polyester slivers;
drawing the polyester slivers to straighten the polyester fibers in the polyester sliver;
drawing the cotton slivers and polyester slivers to form blended cotton polyester slivers, wherein a draw frame includes a first roller, a second roller adjacent to the first roller, and a third roller adjacent to the second roller, wherein a distance D 1 between a central axis of the first roller and a central axis of the second roller is between 40 millimeters and 44 millimeters, wherein a distance D 2 between a central axis of the second roller and a central axis of the third roller is between 38 millimeters and 42 millimeters;
roving the cotton polyester slivers to stretch the cotton polyester sliver into a cotton polyester roving;
spinning and stretching the roving to form yarn, wherein the yarn has at least 60 percent cotton by weight; and
wherein the yarn is woven into cloth and subsequently dyed.

2. The method of claim 1 , wherein the draw frame has a fourth roller adjacent to the third roller, wherein a distance D 3 between a central axis of the third roller and a central axis of the fourth roller is between 38 millimeters and 42 millimeters.

3. The method of claim 1 , wherein the yarn comprises 40 percent by weight polyester fibers.

4. The method of claim 1 , wherein the combing step results in 29 millimeters to 30 millimeters average cotton fiber length in the cotton sliver.

Assignees

• Target Brands Inc

Inventors

• Bhatnagar Avinash

Classifications

• D01H1/02

  ring type {(arrangements with two or more spinning or twisting devices in combination D01H7/90)} · CPC title

• D01H7/52

  Ring-and-traveller arrangements · CPC title

• D02G3/04 Primary

  Blended or other yarns or threads containing components made from different materials · CPC title

• D10B2331/04

  polyesters, e.g. polyethylene terephthalate [PET] · CPC title

• D10B2201/02

  Cotton · CPC title