High strength and low stiffness hesperaloe tissue

Patent metadata

Field	Value
Publication number	US-2021156093-A1
Application number	US-202117168857-A
Country	US
Kind code	A1
Filing date	Feb 5, 2021
Priority date	Nov 23, 2016
Publication date	May 27, 2021
Grant date	—

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) greater 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 wood pulp fibers and 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) from 1,000 to 1,500 g/3″ and a Stiffness Index from 4.0 to 8.0.

2 . The tissue product of claim 1 having a TEA Index from 10.0 to 14.0.

3 . The tissue product of claim 1 having a Geometric Mean Tensile Energy Absorption (GM TEA) greater than about 9.0 g·cm/cm 2 .

4 . The tissue product of claim 1 having a cross-machine direction stretch (CD Stretch) from 10.0 to 14.0 percent.

5 . The tissue product of claim 4 having a cross-machine direction tensile energy absorption (CD TEA) from 6.0 to 8.0 g·cm/cm 2 .

6 . The tissue product of claim 1 having a Tensile Ratio from 1.5 to 2.5.

7 . The tissue product of claim 1 having a Stiffness Index from 4.0 to 7.0 and a GM TEA greater than about 9.0 g·cm/cm 2 .

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

9 . The tissue product of claim 1 having a basis weight from about 30 to about 60 grams per square meter (gsm).

10 . The tissue product of claim 9 having a sheet bulk greater than about 10 cc/g.

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

12 . The tissue product of claim 1 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.

13 . The tissue product of claim 12 wherein the at least one multi-layered through-air dried tissue web is substantially free from softwood kraft pulp fibers.

14 . A tissue product comprising wood pulp fibers and from about 5 to about 50 percent, by weight of the product, high yield hesperaloe fibers, the tissue product having a basis weight from 30 to 60 gsm, a sheet bulk of 10 cc/g or greater, a GMT from 1,000 to 1,500 g/3″ and a GM Slope of about 6.0 kg or less.

15 . The tissue product of claim 14 having a Stiffness Index from 4.0 to 8.0.

16 . The tissue product of claim 14 having a dry burst strength of about 800 gf or greater.

17 . The tissue product of claim 14 having a geometric mean tear (GM Tear) of about 15.0 gf or greater.

18 . The tissue product of claim 14 having a Burt Index from 8.0 to 12.0 and a TEA Index from 10.0 to 14.0.

19 . The tissue product of claim 14 having a CD Stretch of about 10 percent or greater.

20 . The tissue product of claim 14 having a Stiffness Index from 4.0 to 7.0 and a GM TEA greater than about 9.0 g·cm/cm 2 .

Assignees

• Kimberly Clark Co

Inventors

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

Classifications

• 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

• D21H11/12

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

• D21H27/38

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

• D21H27/005 Primary

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