High strength and low stiffness hesperaloe tissue

Patent metadata

Field	Value
Publication number	US-12123146-B2
Application number	US-202318236487-A
Country	US
Kind code	B2
Filing date	Aug 22, 2023
Priority date	Nov 23, 2016
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

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. The 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 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 TE″ Index from 10.0 to 14.0.

3. The tissue product of claim 1 having a Burst Index from 9.0 to about 12.0.

4. The tissue product of claim 1 having a Durability Index from about 35 to about 40.

5. The tissue product of claim 1 having a Stiffness Index from 4.0 to 7.0 and a GM TE″ greater than about 9.0 g·cm/cm2.

6. The tissue product of claim 1 having a cross-machine direction stretch (CD Stretch) from 10.0 to 14.0 percent and cross-machine direction tensile (CD Tensile) from about 500 to about 800 g/3″.

7. The tissue product of claim 6 having a cross-machine direction tensile energy absorption (CD TE″) from 6.0 to 8.0 g·cm/cm2.

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

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

10. The tissue product of claim 1 wherein the product is substantially free from long average fiber length kraft fibers.

11. The tissue product of claim 1 wherein the product is substantially free from softwood kraft pulp fibers.

12. The tissue product of claim 1 wherein the high yield hesperaloe fibers are derived from one or more of H. funifera, H. parviflora, H. nocturne, H. chiangii, H. tenuifolia, H. engelmannii , or H. malacophylla.

13. The tissue product of claim 1 comprising a first tissue ply and a second tissue ply.

14. The tissue product of claim 13 wherein the first the second tissue plies are through-air dried.

15. The tissue product of claim 1 consisting essentially of a single tissue ply.

16. The tissue product of claim 15 wherein the single tissue ply is through-air dried.

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

• D21F11/14

  Making cellulose wadding, filter or blotting paper · CPC title

• D21F11/04

  paper or board consisting on two or more layers · CPC title

• D21H27/38

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

• D21H27/42

  comprising dry-laid paper · CPC title