High strength and low stiffness hesperaloe tissue

Patent metadata

Field	Value
Publication number	US-10526752-B2
Application number	US-201916412828-A
Country	US
Kind code	B2
Filing date	May 15, 2019
Priority date	Nov 23, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

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 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) greater than about 1,000 g/3″, a Stiffness Index less than about 7.0 and a Tensile Energy Absorption (TEA) Index greater than about 10.0.

2. The tissue product of claim 1 having a TEA Index greater than about 11.0.

3. The tissue product of claim 1 having a GMT from about 1,000 to about 1,500 g/3″ and a TEA Index from about 10.0 to about 14.0.

4. The tissue product of claim 1 having a cross-machine direction (CD) TEA greater than about 5.0 g·cm/cm 2 .

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

6. The tissue product of claim 1 having a GMT from about 1,000 to about 1,500 g/3″, a Stiffness Index from about 4.0 to about 7.0 and a GM TEA greater than about 9.0 g·cm/cm 2 .

7. The tissue product of claim 1 having a GMT from about 1,000 to about 1,500 g/3 and a GM Slope of less than about 6.0 kg.

8. The tissue product of claim 1 having a GMT from about 1,000 to about 1,500 g/3″, a GM Slope of less than about 6.0 kg and a Durability Index greater than about 38.0.

9. 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.

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 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.

12. The tissue product of claim 11 wherein the at least one multi-layered through-air dried tissue web is substantially free from softwood kraft pulp fibers.

Assignees

• Kimberly Clark Co

Inventors

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

Classifications

• D21F11/14

  Making cellulose wadding, filter or blotting paper · CPC title

• D21H27/005 Primary

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

• D21H27/38

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

• D21F11/04

  paper or board consisting on two or more layers · 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