Textiles and methods and systems for producing textiles

Patent metadata

Field	Value
Publication number	US-10697111-B2
Application number	US-201816211462-A
Country	US
Kind code	B2
Filing date	Dec 6, 2018
Priority date	Apr 30, 2008
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

Textiles are provided that include fibrous cellulosic materials having an α-cellulose content of less than about 93%, the fibrous materials being spun, woven, knitted, or entangled. The fibrous cellulosic materials can be irradiated with a dose of ionizing radiation that is sufficient to increase the molecular weight of the cellulosic materials without causing significant depolymerization of the cellulosic materials. Methods of treating textiles that include irradiating the textiles are also provided.

First claim

What is claimed is:

1. A method of manufacturing a garment, the method comprising:
exposing a garment body formed from a textile comprising a cellulosic or lignocellulosic material to a particle beam of sufficient energy to penetrate and thereby irradiate the textile;
wherein the particle beam irradiates the textile with a dose of ionizing radiation that is sufficient to increase the molecular weight of the cellulosic or lignocellulosic material, and the dose of ionizing radiation is delivered at a dose rate greater than 0.15 Mrad per second.

2. The method of claim 1 , wherein the dose of ionizing radiation is at from about 0.25 to about 2.5 MRad.

3. The method of claim 1 wherein the particle beam is an electron beam.

4. The method of claim 3 wherein electrons in the electron beam have an energy of at least 0.25 MeV.

5. The method of claim 4 wherein the electrons have an energy between 0.25 MeV and 7.5 MeV.

6. The method of claim 1 , wherein the cellulosic or lignocellulosic material has an α-cellulose content of less than about 93 percent.

7. The method of claim 1 , wherein the cellulosic or lignocellulosic material comprises cotton.

8. The method of claim 1 , wherein exposing the garment body to the particle beam increases the molecular weight of the cellulosic or lignocellulosic material.

9. The method of claim 1 , further comprising quenching the irradiated textile.

10. The method of claim 9 wherein quenching is performed in the presence of a gas selected to react with radicals present in the irradiated textile.

11. The method of claim 1 , wherein the cellulosic or lignocellulosic material is selected from the group consisting of flax, hemp, jute, abaca, sisal, wheat straw, LF, ramie, bamboo fibers, cuprammonium cellulose, regenerated wood cellulose, lyocell, cellulose acetate, and blends thereof.

12. The method of claim 1 , further comprising cooling the cellulosic or lignocellulosic material after exposing the material to the particle beam.

13. The method of claim 12 , further comprising, after cooling, exposing the cellulosic or lignocellulosic material to the particle beam again.

Assignees

• Xyleco Inc

Inventors

• Medoff Marhsall

Classifications

• D06M10/008 Primary

  Treatment with radioactive elements or with neutrons, alpha, beta or gamma rays · CPC title

• B01J19/08

  Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor (application of shock waves B01J3/08) · CPC title

• D10B2201/26

  Nitrocellulose · CPC title

• D10B2201/00

  Cellulose-based fibres, e.g. vegetable fibres · CPC title

• D06M2101/04

  Vegetal fibres · CPC title