Soft and strong tissue product including regenerated cellulose fibers

Patent metadata

Field	Value
Publication number	US-12163293-B2
Application number	US-201917620149-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Jun 17, 2019
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

The present invention provides a wet-pressed, wet-laid tissue product that is soft and durable. The tissue product includes regenerated cellulose fibers providing 25% or less of the total weight of the wet-laid tissue product. The tissue product can include a DSF value of greater than 1.22. The DSF value is defined by the equation: DSF=(Durability Value/TS7 Softness value)/number of plies of the wet-pressed, wet-laid tissue product.

First claim

What is claimed is:

1. A wet-pressed, wet-laid tissue product comprising regenerated cellulose fibers providing 25% or less of the total weight of the wet-laid tissue product and a DSF value of greater than 1.22, the DSF value being defined by the equation: DSF=[Durability Value/TS7 Softness value]/number of plies of the wet-pressed, wet-laid tissue product, wherein the regenerated cellulose fibers comprise a denier between 0.1 to 0.9 and a fiber length of less than 6.0 mm.

2. The wet-pressed, wet-laid tissue product of claim 1 , wherein the DSF value is greater than 1.35.

3. The wet-pressed, wet-laid tissue product of claim 1 , wherein the DSF value is greater than 1.50.

4. The wet-pressed, wet-laid tissue product of claim 1 , wherein the denier is less than 0.7.

5. The wet-pressed, wet-laid tissue product of claim 1 , wherein the regenerated cellulose fibers include an average diameter of less than 10.0 μm.

6. The wet-pressed, wet-laid tissue product of claim 1 , wherein the regenerated cellulose fibers provide between 0.1% to 10.0% of the total weight of the wet-pressed, wet-laid tissue product.

7. The wet-pressed, wet-laid tissue product of claim 1 , further comprising a GMT value greater than 700 g/3″.

8. The wet-pressed, wet-laid tissue product of claim 1 , wherein the regenerated cellulose fibers are blended with other fibers throughout the wet-pressed, wet-laid tissue product.

9. The wet-pressed, wet-laid tissue product of claim 8 , further comprising a Wet Burst/10 value greater than 8.0.

10. The wet-pressed, wet-laid tissue product of claim 1 , wherein the wet-pressed, wet-laid tissue product includes multiple plies, at least one of the multiple plies including two or more layers, and wherein the regenerated cellulose fibers are disposed within at least one of the two or more layers.

11. The wet-pressed, wet-laid tissue product of claim 10 , wherein the at least one of the multiple plies including two or more layers includes two outer layers and an inner layer, and wherein the regenerated cellulose fibers are disposed within the two outer layers.

12. The wet-pressed, wet-laid tissue product of claim 10 , further comprising a Wet Burst/10 value greater than 15.0.

13. A wet-pressed, wet-laid tissue product comprising regenerated cellulose fibers providing 25% or less of the total weight of the wet-laid tissue product, the regenerated cellulose fibers being blended with other fibers throughout the wet-laid tissue product, the wet-pressed wet-laid tissue product further comprising a Durability value>0.0178×GMT+12.268, wherein the GMT is between about 600 g/3″ to about 1300 g/3″, wherein the regenerated cellulose fibers comprise a denier between 0.1 to 0.9 and a fiber length of less than 6.0 mm.

14. The wet-pressed, wet-laid tissue product of claim 13 , further comprising a Wet Burst/10 value greater than 8.0.

15. The wet-pressed, wet-laid tissue product of claim 13 , wherein the regenerated cellulose fibers provide between 0.1% to 10.0% of the total weight of the wet-pressed, wet-laid tissue product.

16. A wet-pressed, wet-laid tissue product comprising regenerated cellulose fibers providing 25% or less of the total weight of the wet-pressed, wet-laid tissue product, the wet-pressed, wet-laid tissue product including multiple plies, at least one of the multiple plies including two or more layers, and wherein the regenerated cellulose fibers are disposed within at least one of the two or more layers, the wet-pressed, wet-laid tissue product further comprising a Durability value>0.00147×GMT+18.583, wherein the GMT is between about 600 g/3″ to about 1500 g/3″, wherein the regenerated cellulose fibers comprise a denier between 0.1 to 0.9 and a fiber length of less than 6.0 mm.

17. The wet-pressed, wet-laid tissue product of claim 16 , further comprising a Wet Burst/10 value greater than 15.0.

18. The wet-pressed, wet-laid tissue product of claim 16 , further comprising a TS7 value<0.0045×GMT+5.4458.

19. The wet-pressed, wet-laid tissue product of claim 16 , wherein the regenerated cellulose fibers comprise a fiber diameter of less than 10.0 μm.

Assignees

• Kimberly Clark Co

Inventors

• Shi Bo
• Shannon Thomas G
• Thompson Brent M
• Zawadzki Michael A

Classifications

• D21H27/38

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

• D21H15/02

  characterised by configuration · CPC title

• D21H13/08

  from regenerated cellulose · CPC title

• D21H27/002 Primary

  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