Composite yarn

Patent metadata

Field	Value
Publication number	US-12467163-B2
Application number	US-202418595131-A
Country	US
Kind code	B2
Filing date	Mar 4, 2024
Priority date	Mar 4, 2024
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A composite yarn is disclosed herein having a plurality of first synthetic fibers having a tenacity of greater than or equal to 1 N/tex; and a plurality of second fibers having a tenacity of less than or equal to 0.95 N/tex; wherein each of the first synthetic fibers and the second fibers are stretch broken and/or cut; and wherein each of the first synthetic fibers and the second fibers have an average length from about 75 mm to about 150 mm. A method of making the composite yarn and articles formed from the composite yarn are also disclosed.

First claim

The invention claimed is:

1 . A composite yarn, comprising:
a plurality of first synthetic fibers having a tenacity of greater than or equal to 1 N/tex; and a plurality of second fibers having a tenacity of less than or equal to 0.95 N/tex; wherein each of the first synthetic fibers and the second fibers are stretch broken to have an average length from about 75 mm to about 150 mm; wherein the first synthetic fibers comprise para-aramid, meta-aramid, copolyamides, carbon fibers, HPPE, UHMWPE, reinforced HPPE, reinforced UHMWPE, or a combination thereof; and wherein the second fibers comprise elastomers, viscose, nylon, acrylic, modacrylic, a polyester, a polyolefin, silica fibers, ceramic fibers, basalt fibers, metal fibers, glass fibers, or a combination thereof.

2 . The composite yarn of claim 1 , wherein the second fibers have a tenacity of less than or equal to 0.5 N/tex.

3 . The composite yarn of claim 1 , wherein the first synthetic fibers are reinforced filament fibers.

4 . The composite yarn of claim 1 , wherein a weight-to-weight ratio of the first synthetic fibers to the second fibers is from about 10:90 to about 90:10, based on a total amount of the first synthetic fibers and the second fibers present.

5 . The composite yarn of claim 1 , further comprising at least one wrapping yarn wrapped around a core yarn comprising the first synthetic fibers and the second fibers.

6 . The composite yarn of claim 5 , wherein the at least one wrapping yarn comprises a polyamide, a polyester, a nylon or a combination thereof.

7 . The composite yarn of claim 1 , having a denier between 70 and 221.

8 . A composite yarn, comprising:
a plurality of first synthetic fibers having a tenacity of greater than or equal to 1 N/tex; and a plurality of second fibers having a tenacity of less than or equal to 0.95 N/tex; wherein each of the first synthetic fibers and the second fibers are stretch broken and/or cut; wherein each of the first synthetic fibers and the second fibers have an average length from about 75 mm to about 150 mm; and wherein the composite yarn further comprises electrically conductive hairy fibers, each comprising a plurality of appendages extending away from a center of the hairy fiber, wherein a portion of the plurality of appendages extend away from an outer surface of the composite yarn,
wherein an article produced from the composite yarn has a vertical resistivity of less than or equal to about 10 8 Ohm when determined according to EN 16350,
wherein the second fibers comprise the conductive hairy fibers, and/or
wherein the composite yarn comprises the first synthetic fibers, the second fibers, and the conductive hairy fibers.

9 . A composite yarn, comprising:
a plurality of first synthetic fibers having a tenacity of greater than or equal to 1 N/tex; and a plurality of second fibers having a tenacity of less than or equal to 0.95 N/tex; wherein each of the first synthetic fibers and the second fibers are stretch broken and/or cut; wherein each of the first synthetic fibers and the second fibers have an average length from about 75 mm to about 150 mm; and wherein the second fibers comprise acrylic and/or polyester, wherein an article produced from the composite yarn has a contact heat resistance of 1 when determined according to EN407.

10 . The composite yarn of claim 1 , wherein the first synthetic fibers comprise meta aramid, and/or para aramid fibers, the second fibers comprise nylon, and glass fibers, wherein an article produced from the composite yarn has a flame spread value of 1 when determined according to EN407.

11 . The composite yarn of claim 1 , dimensioned to be knitted with a needle from 15 gauge to 18 gauge.

12 . The composite yarn of claim 1 , dimensioned to be knitted with a 21 gauge needle.

13 . A method for making the composite yarn of claim 1 , comprising:
spinning a plurality of the first synthetic fibers and a plurality of the second fibers to form the composite yarn.

14 . The method of claim 13 , further comprising wrapping at least one wrapping yarn around a core yarn comprising the first synthetic fibers and the second fibers to form the composite yarn.

15 . A knitted article comprising the composite yarn of claim 1 .

16 . The knitted article of claim 15 , having an EN ISO cut level from B to E, when determined according to EN 388:2016.

Assignees

• Ansell Ltd

Inventors

• Mathota Mathotarallage Amani Rasika
• Kumara Andarage Naveen Pradeep
• Withanage Withanage Priyantha Kumara

Classifications

• D10B2201/24

  Viscose · CPC title

• D10B2321/02

  polyolefins · CPC title

• D10B2331/04

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

• D10B2321/08

  polymers of unsaturated carboxylic acids or unsaturated organic esters, e.g. polyacrylic esters, polyvinyl acetate · CPC title

• D10B2331/02

  polyamides (D10B2331/08 takes precedence) · CPC title