Methods for liberating trichome fibers from portions of a host plant

Patent metadata

Field	Value
Publication number	US-11098451-B2
Application number	US-201916388986-A
Country	US
Kind code	B2
Filing date	Apr 19, 2019
Priority date	Dec 18, 2015
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Improved processes for liberating trichome fibers from non-seed portions of a trichome-bearing host plant are provided. The processes include one or more steps for disassociating trichome fibers that are already separated from leaves, stems, and still-attached fibers so that the separated trichome fibers can be collected and not lost through a waste stream.

First claim

What is claimed is:

1. A fibrous structure comprising a fiber blend that comprises wood fibers and trichome fibers, wherein from about 42% to about 46% of the trichome fibers have a length that is from 200-500 microns.

2. The fibrous structure of claim 1 , wherein the fiber blend comprises at least 1% of trichome fibers.

3. The fibrous structure of claim 1 , wherein the fiber blend comprises from about 1% to about 40% of trichome fibers.

4. The fibrous structure of claim 1 , wherein the fiber blend comprises from about 2% to about 30% of trichome fibers.

5. The fibrous structure of claim 1 , wherein the fiber blend comprises from about 5% to about 25% of trichome fibers.

6. The fibrous structure of claim 1 , wherein the fiber blend comprises at least 1% of trichome fibers, and the wood fibers comprise both hardwood fibers and softwood fibers.

7. A single or multi ply sanitary tissue product comprising the fibrous structure according to claim 1 .

8. The sanitary tissue product of claim 7 , wherein the fibrous structure comprises an additive selected from the group consisting of: wet strength additives, softening agents, and mixtures thereof.

9. The sanitary tissue product of claim 7 , wherein the sanitary tissue product exhibits a total dry tensile of from about 200 g/in to about 1000 g/in, as measured according to the Total Dry Tensile Test Method described herein.

10. The sanitary tissue product of claim 7 , wherein the sanitary tissue product is toilet tissue.

11. The fibrous structure of claim 1 , wherein the trichome fibers are derived from a plant in the Stachys genus.

12. The fibrous structure of claim 1 , wherein the trichome fibers comprise an L* color value of greater than about 70%.

13. The fibrous structure of claim 1 , wherein the trichome fibers comprise a b* color value of less than about 15%.

14. The fibrous structure of claim 3 , wherein the fiber blend comprises at least 1% of trichome fibers, and the wood fibers comprise both hardwood fibers and softwood fibers.

15. A single or multi ply sanitary tissue product comprising the fibrous structure according to claim 3 .

16. The sanitary tissue product of claim 15 , wherein the sanitary tissue product exhibits a total dry tensile of from about 200 g/in to about 1000 g/in, as measured according to the Total Dry Tensile Test Method described herein.

17. The sanitary tissue product of claim 16 , wherein the fibrous structure comprises an additive selected from the group consisting of: wet strength additives, softening agents, and mixtures thereof.

18. The sanitary tissue product of claim 17 , wherein the sanitary tissue product is multi ply.

19. The sanitary tissue product of claim 18 , wherein each ply of the multi ply sanitary tissue product comprises trichome fibers.

20. A multi ply sanitary tissue product comprising the fibrous structure according to claim 1 , wherein each ply comprises trichome fibers.

Assignees

• Procter & Gamble

Inventors

• Mohammadi Khosrow Parviz
• Kreider Scott Christopher

Classifications

• D21H11/12 Primary

  Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse · CPC title

• D21D5/24

  in cyclones · CPC title

• B32B29/005

  next to another layer of paper or cardboard layer · CPC title

• A47K10/16

  Paper towels; Toilet paper; Holders therefor · CPC title

• D21B1/34

  Kneading or mixing; Pulpers · CPC title