High strength and low stiffness agave tissue

Patent metadata

Field	Value
Publication number	US-10428465-B2
Application number	US-201616324964-A
Country	US
Kind code	B2
Filing date	Oct 27, 2016
Priority date	Oct 27, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

The invention provides tissue products comprising agave fibers and methods of producing the same. Preferably the agave fibers are high yield agave pulp fibers, which have demonstrated the ability to replace a substantial portion of the long fiber fraction of the furnish without negatively effecting important tissue product properties such as stiffness, CD Durability and bulk. Thus, the tissue product may comprise greater than about 10 weight percent agave fiber and more preferably greater than about 25 weight percent. Accordingly, in certain embodiments the present disclosure provides a three-layered through-air dried tissue product comprising high-yield agave fibers from the leaves of Agave tequilana, Eucalyptus Hardwood Kraft (EHWK) and Northern Softwood Kraft (NSWK), wherein the high-yield agave fibers comprise 10.0 percent by weight of the tissue product, the product having a CD durability greater than about 18 and sheet bulk greater than about 10 cc/g.

First claim

What is claimed is:

1. A tissue product comprising at least one through-air dried tissue web, the tissue web comprising at least about 10 weight percent high yield agave pulp fibers and less than about 30 percent, by weight of the tissue product, wood pulp fibers having an average fiber length greater than about 2.0 mm, the tissue product having a CD Durability greater than about 18 and a sheet bulk greater than about 10 cc/g.

2. The tissue product of claim 1 having a CD Stretch greater than about 8 percent.

3. The tissue product of claim 1 having a CD Durability from about 20 to about 22.

4. The tissue product of claim 1 having a geometric mean tensile (GMT) from about 600 to about 1,200 g/3″.

5. The tissue product of claim 1 having a Stiffness Index less than about 10.0.

6. The tissue product of claim 1 having a Burst Index greater than about 8.0.

7. The tissue product of claim 1 wherein the at least one tissue web comprises is substantially free from wood pulp fibers having an average fiber length greater than about 2.0 mm.

8. The tissue product of claim 1 wherein the at least one tissue web comprises from about 10 to about 40 percent, by weight of the tissue product, high yield agave pulp fibers.

9. The tissue product of claim 1 wherein the high yield agave pulp fibers are derived from Agave tequilana, Agave sisalana or Agave fourcroydes and have an average fiber length less than 2.0 mm.

10. The tissue product of claim 9 wherein the high yield agave pulp fibers are mechanically processed and the mechanical process results in a pulp yield of at least about 50 percent and have an average fiber length less than 2.0 mm and a coarseness greater than 12.0 mg/100 m.

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

12. A single-ply through-air dried tissue product comprising at least about 10 weight percent high yield agave pulp fibers and less than about 30 percent, by weight of the tissue product, wood pulp fibers having an average fiber length greater than about 2.0 mm, the tissue product having a Stiffness Index less than about 10.0 and a sheet bulk greater than about 10 cc/g.

13. The tissue product of claim 12 wherein the ply comprises a middle layer and two outer layers wherein the high yield agave pulp fiber is selectively disposed in the middle layer and the two outer layers are substantially free of high yield agave pulp fiber.

14. The tissue product of claim 12 having a CD Stretch greater than about 8 percent and a CD Durability from about 20 to about 22.

15. The tissue product of claim 12 having a geometric mean tensile (GMT) from about 600 to about 1,200 g/3″.

16. The tissue product of claim 12 having a Stiffness Index from about 8.0 to about 9.0.

17. The tissue product of claim 12 having a Burst Index greater than about 8.0.

18. A method of making a tissue web comprising the steps of:
a. forming an aqueous suspension of high yield agave pulp fibers;
b. depositing an aqueous suspension of high yield agave pulp fibers onto a forming fabric;
c. dewatering the web to a consistency of about 20 percent or greater;
d. transferring the web to a throughdrying fabric
e. throughdrying the web, wherein the web comprises at least about 10 percent, by weight of the tissue web, high yield agave pulp fibers, and;
f. converting the web to a rolled tissue product, the product having a geometric mean tensile (GMT) from about 600 to about 1,200 g/3″, a Stiffness Index less than about 10.0 and a sheet bulk greater than about 10 cc/g.

Assignees

• Kimberly Clark Co

Inventors

• Rouse Kayla Elizabeth
• Underhill Richard Louis
• Shannon Thomas Gerard
• Reiser John Matthew

Classifications

• 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

• D21F11/145 Primary

  including a through-drying process · CPC title

• D21H27/005 Primary

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

• D21H27/00

  Special paper not otherwise provided for, e.g. made by multi-step processes · CPC title