Hesperaloe tissue having improved cross-machine direction properties

Patent metadata

Field	Value
Publication number	US-10337148-B2
Application number	US-201715816392-A
Country	US
Kind code	B2
Filing date	Nov 17, 2017
Priority date	Nov 23, 2016
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

Soft, durable and bulky tissue products comprising non-wood fibers and more particularly high yield hesperaloe pulp fibers are disclosed. The tissue products preferably comprise at least about 5 percent, by weight of the product, high yield hesperaloe pulp fiber and have relatively modest tensile strengths, such as a geometric mean tensile (GMT) less than about 1,000 g/3″, and improved durability and cross-machine direction (CD) properties, such as a CD Stretch greater than about 10 percent. Additionally, at the foregoing tensile strengths the products are not overly stiff. For example the tissue products may have a Stiffness Index less than about 10.0.

First claim

What is claimed is:

1. A tissue product comprising from about 5 to about 50 percent, by weight of the product, high yield hesperaloe fibers, the tissue product having a geometric mean tensile (GMT) less than about 1,000 g/3″, a CD stretch greater than about 10 percent and a Durability Index greater than about 38.0.

2. The tissue product of claim 1 having a slough less than about 10 mg.

3. The tissue product of claim 1 having a dry burst strength greater than about 800 gf.

4. The tissue product of claim 1 having a CD TEA greater than about 5.0 g·cm/cm 2 .

5. The tissue product of claim 1 having a CD tensile strength greater than about 500 g/3″.

6. The tissue product of claim 1 having a GM Tear strength greater than about 15 gf.

7. The tissue product of claim 1 having a Compression Modulus (K) greater than 5.5.

8. The tissue product of claim 1 having a basis weight from about 30 to about 60 grams per square meter (gsm) and a sheet bulk greater than about 10 cc/g.

9. The tissue product of claim 1 having a Tensile Ratio from about 1.5 to about 2.0.

10. The tissue product of claim 1 comprising from about 20 to about 50 percent, by weight of the product, high yield hesperaloe fibers.

11. The tissue product of claim 1 having a GM Slope of less than about 6.0 kg.

12. The tissue product of claim 1 having a Stiffness Index from about 4.0 to about 8.0.

13. The tissue product of claim 1 wherein the tissue product comprises two plies and each ply is a through-air dried tissue web.

14. 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 geometric mean tensile (GMT) less than about 1,000 g/3, a Durability Index greater than about 28.0 and a Stiffness Index less than about 8.0, wherein the tissue product comprises from about 20 to about 50 weight percent high yield hesperaloe pulp fibers.

15. The tissue product of claim 14 having a GM Slope less than about 6.0 kg.

16. The tissue product of claim 14 having a basis weight from about 30 to about 60 gsm and a sheet bulk from about 10 to about 15 cc/g.

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

18. A single-ply through-air dried tissue product comprising from about 5 to about 50 percent, by weight of the product, high yield hesperaloe pulp fibers, the tissue product having a GMT less than about 1,000 g/3″, Compression Modulus (K) greater than about 5.5 and a Stiffness Index less than about 8.0.

19. The tissue product of claim 18 having a GM Slope less than about 6.0 kg.

20. The tissue product of claim 18 having a CD TEA greater than about 5.0 g·cm/cm 2 and a CD tensile strength greater than about 500 g/3″.

Assignees

• Kimberly Clark Co

Inventors

• Rouse Kayla Elizabeth
• Underhill Richard Louis
• Paulson David John
• Sauer Felicia Marie
• Shannon Thomas Gerard

Classifications

• D21H27/38

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

• D21C5/00

  Other processes for obtaining cellulose, e.g. cooking cotton linters (obtaining fibres for spinning D01C); {Processes characterised by the choice of cellulose-containing starting materials} · CPC title

• D21H11/12

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

• D21H27/42

  comprising dry-laid paper · CPC title