# US 11,898,278 B2 · Hybrid textile for reinforcing composites

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- Number: US 11,898,278 B2
- Document ID: US11898278B2
- Status: Granted
- Kind: B2
- Application number: 16/315,065
- Filed: 2017-07-04
- Published: 2023-06-22
- Granted: 2024-02-13
- Earliest claimed: 2016-07-05
- Assignees: Saint-Gobain Adfors
- Applicants: Saint-Gobain Adfors
- Inventors: Jonas Bouchard; Alexandre Garcia
- Web page: https://patentgrep.com/patent/US11898278B2

## CPC

- D03D 15/00: Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- C08J 5/247: {using fibres of at least two types}
- D03D 13/008: {characterised by weave density or surface weight}
- D03D 15/217: natural from plants, e.g. cotton
- D03D 15/267: Glass
- C08J 2300/22: Thermoplastic resins
- C08J 2300/24: Thermosetting resins
- D10B 2101/00: Inorganic fibres
- D10B 2101/06: Glass
- D10B 2101/08: Ceramic
- D10B 2101/12: Carbon; Pitch
- D10B 2101/14: Carbides; Nitrides; Silicides; Borides
- D10B 2101/20: Metallic fibres
- D10B 2201/01: Natural vegetable fibres
- D10B 2211/00: Protein-based fibres, e.g. animal fibres
- D10B 2505/02: Reinforcing materials; Prepregs
- D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

A hybrid woven textile for reinforcing a polymer matrix of a composite material that includes inorganic fibers selected from glass fibers, basalt fibers, carbon fibers, ceramic fibers, quartz fibers and silica fibers, and natural organic fibers, characterized in that the inorganic fibers and the natural organic fibers are co-woven, co-braided or co-knitted with one another.

## Claims

### Claim 1

A hybrid textile comprising yarns of inorganic fibers, and yarns of natural organic fibers, the inorganic fibers and the natural organic fibers being co-woven, co-braided or co-knitted with one another,
wherein said hybrid textile comprises between 70 and 90 wt % of natural organic fibers and from 10 to 30 wt % of inorganic fibers, said percentages being expressed relative to the whole of the inorganic fibers and natural organic fibers, and
wherein the inorganic fibers are glass fibers and the natural organic fibers are flax fibers.

### Claim 2 (depends on 1)

The hybrid textile as claimed in claim 1, comprising between 80 and 90 wt % of natural organic fibers, and from 10 to 20 wt % of inorganic fibers, said percentages being expressed relative to the whole of the inorganic fibers and natural organic fibers.

### Claim 3 (depends on 1)

The hybrid textile as claimed in claim 1, wherein the yarns of inorganic fibers and the yarns of natural organic fibers have, independently of one another, a linear weight between 500 and 3,000 tex.

### Claim 4 (depends on 1)

The hybrid textile as claimed in claim 1, having:
a thickness below 30 mm; and/or
a weight per unit area between 30 and 3000 g/m2.

### Claim 5 (depends on 4)

The hybrid textile as claimed in claim 4, having:
a thickness between 0.2 mm and 5 mm; and/or
a weight per unit area between 100 and 2000 g/m2.

### Claim 6 (depends on 5)

The hybrid textile as claimed in claim 5, having:
a thickness between 1 mm and 4 mm; and/or
a weight per unit area between 100 and 1200 g/m2.

### Claim 7 (depends on 6)

The hybrid textile as claimed in claim 6, having:
a thickness between 1.5 mm and 3 mm; and/or
a weight per unit area between 100 and 1000 g/m2.

### Claim 8 (depends on 1)

A prepreg comprising at least one hybrid textile as claimed in claim 1 and a thermoplastic or thermosetting resin, the resin representing from 20 to 45 wt % of the total weight of the prepreg.

### Claim 9 (depends on 8)

The prepreg as claimed in claim 8, wherein the resin represents from 25 to 40 wt % of the total weight of the prepreg.

### Claim 10 (depends on 1)

A composite comprising an organic polymer matrix and a hybrid textile as claimed in claim 1.

### Claim 11 (depends on 1)

The hybrid textile as claimed in claim 1, wherein the linear weight of the yarns of organic fibers is lower than that of the inorganic fibers.

### Claim 12 (depends on 1)

The hybrid textile as claimed in claim 1, wherein the glass fibers have a diameter comprised between 5 and 24 μm.