Highly durable towel comprising non-wood fibers

Patent metadata

Field	Value
Publication number	US-10145066-B2
Application number	US-201515574331-A
Country	US
Kind code	B2
Filing date	May 29, 2015
Priority date	May 29, 2015
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

The present invention relates to tissue products comprising high yield hesperaloe fiber having improved wet performance, such as improved absorbency, CD Wet/Dry Ratio and CD Wet Durability. The addition of high yield hesperaloe pulp fibers surprisingly improves the CD Wet/Dry ratio without negatively affecting the absorbency of the tissue product. For example, tissue products of the present invention generally have an Absorbent Capacity greater than about 6.0 g/g, such as from about 8.0 to 8.0 g/g. As such the tissue products are durable when wet, but are still sufficiently absorbent. This balance of absorbency and wet strength is not found in the prior art without resorting to adding latex binders or the like to the tissue product.

First claim

What is claimed is:

1. A tissue product comprising greater than about 20 weight percent high yield hesperaloe fiber having an Absorbent Capacity greater than about 7.0 g/g and a CD Wet/Dry Ratio greater than about 0.30.

2. The tissue product of claim 1 having a Wet CD Durability of greater than about 1.75.

3. The tissue product of claim 1 having a GMT from about 1500 to about 3000 g/3″.

4. The tissue product of claim 1 having a Stiffness Index from about 4.0 to about 6.0.

5. The tissue product of claim 1 having a basis weight from about 30 to about 60 gsm.

6. The tissue product of claim 1 having a wet CD stretch greater than about 8.0 percent.

7. The tissue product of claim 1 wherein the tissue product comprises a single-ply multi-layered web having a first layer comprising conventional wood pulp fibers and a second layer consisting essentially of high yield hesperaloe pulp fiber.

8. The tissue product of claim 1 wherein the tissue product comprises at least one through-air dried tissue web.

9. A tissue product comprising at least one multi-layered through-air dried tissue web comprising a first and a second layer, the first layer being substantially free from high yield hesperaloe pulp fibers and the second layer consisting essentially of high yield hesperaloe pulp fibers, the tissue product having a Wet CD Durability from about 1.75 to about 2.0 and a Stiffness Index less than about 6.0.

10. The tissue product of claim 9 having CD Wet/Dry Ratio from about 0.28 to about 0.32.

11. The tissue product of claim 9 having an Absorbent Capacity from about 6.5 to about 7.5.

12. The tissue product of claim 9 having a GM Slope less than about 8.0 kg.

13. The tissue product of claim 9 having a basis weight from about 30 to about 60 gsm and a GMT from about 1500 to about 2500 g/3″.

14. The tissue product of claim 9 wherein the tissue product is substantially free from softwood kraft pulp fibers.

15. The tissue product of claim 9 wherein the high yield hesperaloe pulp fibers have a lignin content from about 10 to about 15 weight percent.

16. A single-ply through-air dried tissue product comprising at least about 20 weight percent high yield hesperaloe pulp fibers, the tissue product having a basis weight from about 30 to about 60 gsm, a GMT from about 1500 to about 2500 g/3″ and an Absorbent Capacity greater than about 7.0 g/g.

17. The single-ply through-air dried tissue product of claim 16 having a Wet CD Durability from about 1.75 to about 2.0.

18. The single-ply through-air dried tissue product of claim 16 having a Stiffness Index less than about 6.0.

19. The single-ply through-air dried tissue product of claim 16 wherein the tissue product comprises from about 20 to about 40 weight percent high yield hesperaloe fiber and is substantially free from softwood kraft pulp fibers.

20. The single-ply through-air dried tissue product of claim 16 wherein high yield hesperaloe pulp fibers have a lignin content from about 10 to about 15 weight percent.

Assignees

• Kimberly Clark Co

Inventors

• Shannon Thomas Gerard
• Underhill Richard Louis
• Laberge Kevin Leon
• Reiser John Matthew
• Gafford Gilbert Darrell

Classifications

• A47K10/16 Primary

  Paper towels; Toilet paper; Holders therefor · CPC title

• D21H27/38

  at least one of the sheets having a fibrous composition differing from that of other sheets · CPC title

• D21H27/002

  Tissue paper; Absorbent paper (D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00) · CPC title

• D21H27/005

  relating to physical or mechanical properties, e.g. tensile strength, stretch, softness · CPC title

• D21H27/007

  relating to absorbency, e.g. amount or rate of water absorption, optionally in combination with other parameters relating to physical or mechanical properties · CPC title