# US 2020/0399796 A1 · Fiber mix for yarn and fabrics

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2020/0399796 A1
- Document ID: US20200399796A1
- Status: Published application
- Kind: A1
- Application number: 16/772,026
- Filed: 2018-12-12
- Published: 2020-12-24
- Earliest claimed: 2017-12-12
- Assignees: Filspec Inc.
- Applicants: Filspec Inc.
- Inventors: Sebastien COUTURE; Eric PERLINGER
- Web page: https://patentgrep.com/patent/US20200399796A1

## CPC

- D02G 3/36: Cored or coated yarns or threads ({D02G3/34, D02G3/40 take precedence}; elastic yarns or threads D02G3/32)
- D02G 3/04: Blended or other yarns or threads containing components made from different materials
- D02G 3/443: {Heat-resistant, fireproof or flame-retardant yarns or threads (fire- or flame-proof filaments D01F1/07; woven fabrics using heat-resistant or fireproof threads D03D15/513)}
- D10B 2201/02: Cotton
- D10B 2201/24: Viscose
- D10B 2321/101: modacrylic
- D10B 2331/02: polyamides (D10B2331/08 takes precedence)
- D10B 2331/021: aromatic polyamides, e.g. aramides
- D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

A yarn comprises a blend of two or more types of fibers. Fibers of viscose incorporating silica compose 50-85% by weight of the yarn. Fibers of modacrylic compose 15-50% by weight of the yarn. A composite yarn with a core being defined by the yarn is also provided. The composite yarn has a sheath surrounding the core.

## Claims

### Claim 1

A yarn comprising:
a blend of at least two types of fibers, including at least
fibers of viscose incorporating silica composing 50-85% by weight of the yarn, and
fibers of modacrylic composing 15-50% by weight of the yarn.

### Claim 2 (depends on 1)

The yarn according to claim 1, wherein the fibers of viscose have a linear mass density ranging between 1.5 and 3.5 deniers, inclusively.

### Claim 3 (depends on 1)

The yarn according to claim 1, wherein the fibers of viscose are staple fibers of viscose.

### Claim 4 (depends on 3)

The yarn according to claim 3, wherein a substantial portion of the staple fibers are between 35 mm and 120 mm in length.

### Claim 5 (depends on 1)

The yarn according to claim 1, wherein the fibers of modacrylic have a linear mass density ranging between 1.0 and 3.0 deniers, inclusively.

### Claim 6 (depends on 1)

The yarn according to claim 1, wherein the fibers of modacrylic are staple fibers.

### Claim 7 (depends on 6)

The yarn according to claim 6, wherein a substantial portion of the staple fibers of modacrylic are between 35 mm and 120 mm in length.

### Claim 8 (depends on 1)

The yarn according to claim 1, wherein the blend of fibers has a fiber-to-fiber dispersion of the fibers.

### Claim 9 (depends on 1)

The yarn according to claim 1, further including fibers of meta-aramid composing at most 20% by weight of the yarn.

### Claim 10 (depends on 1)

The yarn according to claim 1, further including fibers of para-aramid composing at most 20% by weight of the yarn.

### Claim 11 (depends on 1)

The yarn according to claim 1, further including fibers of nylon composing at most 20% by weight of the yarn

### Claim 12 (depends on 1)

The yarn according to claim 1, wherein a yarn count is between 20 tex and 250 tex, inclusively.

### Claim 13 (depends on 1)

A composite yarn comprising:
a core, the core being defined by the yarn according to claim 1; and
a sheath surrounding the core.

### Claim 14 (depends on 13)

The composite yarn according to claim 13, wherein the sheath includes cellulosic fibers.

### Claim 15 (depends on 14)

The composite yarn according to claim 14, wherein the cellulosic fibers are cotton fibers, lyocell, or viscose fibers.

### Claim 16 (depends on 14)

The composite yarn according to claim 14, wherein the sheath is 100% cotton fibers.

### Claim 17 (depends on 15)

The composite yarn according to claim 15, wherein the cotton is non-treated.

### Claim 18 (depends on 14)

The composite yarn according to claim 14, wherein the sheath includes nylon fibers.

### Claim 19 (depends on 13)

The composite yarn according to claim 13, wherein the sheath has fibers of corespun around the core.