Soft tissue produced using a structured fabric and energy efficient pressing

Patent metadata

Field	Value
Publication number	US-11807992-B2
Application number	US-202017121879-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	Nov 24, 2014
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

A structured rolled sanitary tissue product having at least two plies, wherein the structured rolled sanitary tissue product has a crumple resistance of less than 30 grams force, a caliper of at least 450 microns/ply, and a bulk softness (TS7) of 10 or less.

First claim

The invention claimed is:

1. A structured rolled sanitary tissue product comprising at least two plies, wherein the tissue product has a crumple resistance of less than 30 grams force, an average peak to valley depth of 44 to 110 microns, and a caliper of 500 microns/2 ply to 700 microns/2 ply.

2. The structured tissue product of claim 1 , wherein a web that makes up one of the at least two plies comprises a first exterior layer, an interior layer and a second exterior layer; and
the interior layer contains a first wet end additive comprising an ionic surfactant and a second wet end additive comprising a non-ionic surfactant.

3. The structured tissue product according to claim 2 , wherein the first exterior layer comprises at least 50% virgin hardwood fibers.

4. The structured tissue product according to claim 3 , wherein the virgin hardwood fibers is virgin eucalyptus fibers.

5. The structured tissue product according to claim 2 , wherein the first exterior layer comprises at least 75% virgin hardwood fibers.

6. The structured tissue product according to claim 2 , wherein the interior layer comprises cannabis fibers in an amount of 1% to 10%.

7. The structured tissue product according to claim 2 , wherein the second exterior layer comprises cannabis fibers in an amount of 1% to 10%.

8. The structured tissue product according to claim 2 , the first exterior layer comprises a wet end temporary wet strength additive.

9. The structured tissue product according to claim 8 , wherein wet end temporary wet strength additive comprises glyoxalated polyacrylamide.

10. The structured tissue product according to claim 2 , wherein the first exterior layer comprises a wet end dry strength additive.

11. The structured tissue product according to claim 10 , wherein the wet end dry strength additive comprises amphoteric starch.

12. The structured tissue product according to claim 2 , wherein the second exterior layer comprises a wet end dry strength additive.

13. The structured tissue product according to claim 12 , wherein the wet end dry strength additive comprises amphoteric starch.

14. The structured tissue product according to claim 2 , wherein the second wet end additive comprises an ethoxylated vegetable oil.

15. The structured tissue product according to claim 2 , wherein the second wet end additive comprises a combination of ethoxylated vegetable oils.

16. The structured tissue product according to claim 2 , wherein the ionic surfactant comprises a debonder.

17. The structured tissue product according to claim 2 , wherein the first and second exterior layers are substantially free of surface deposited softener agents or lotions.

18. The structured tissue product according to claim 2 , wherein the first exterior layer comprises a surface deposited softener agent or lotion.

19. The structured tissue product according to claim 2 , wherein the non-ionic surfactant has a hydrophilic-lipophilic balance of less than 10.

20. The structured tissue product of claim 2 , wherein the first exterior layer is comprised of 100% eucalyptus fibers.

21. The structured tissue product of claim 2 , wherein the interior layer contains 10% cannabis fibers, 30% northern bleached softwood kraft fibers and 60% eucalyptus fibers.

22. The structured tissue product of claim 2 , wherein the second exterior layer contains 10% cannabis fibers, 20% northern bleached softwood kraft fibers and 70% eucalyptus fibers.

23. The structured tissue product of claim 1 , wherein the tissue product has a basis weight in g/m 2 per 2 ply of at least 28 g/m 2 .

24. The structured tissue product of claim 1 , wherein the tissue product has a machine direction tensile strength per 2 ply of 110 N/m to 190 N/m.

25. The structured tissue product of claim 1 , wherein the tissue product has a cross machine direction tensile strength per 2 ply of 35 N/m to 90 N/m.

26. The structured tissue product of claim 1 , wherein the tissue product has a machine direction stretch of 4% to 30% per 2 ply.

27. The structured tissue product of claim 1 , wherein the tissue product has a cross direction stretch of 4% to 20% per 2 ply.

28. The structured tissue product of claim 1 , wherein the tissue product has a 2-ply cross direction wet tensile strength of 0 to 25 N/m.

29. The structured tissue product of claim 1 , wherein the tissue product has a ball burst strength of 150 gf to 300 gf per 2-ply.

30. The structured tissue product of claim 1 , wherein the tissue product has a lint value of 2.5 to 7.5 per 2 ply as measured using a Sutherland® 2000™ Rub Tester.

31. The structured tissue product of claim 1 , wherein the tissue product has a softness of 85 TSA to 100 TSA as measured using a Tissue Softness Analyzer.

32. The structured tissue product of claim 1 , wherein a web that makes up at least one of the two plies contains a glyoxylated polyacrylamide, an amphoteric starch and a debonder.

33. The structured tissue product of claim 1 , wherein the tissue product has a caliper of at least 450 microns/2 ply.

34. The structured tissue product of claim 1 , wherein the bulk softness (TS7) of the tissue product is 10 or less as measured using a Tissue Softness Analyzer.

35. A structured rolled sanitary tissue product comprising at least two plies, wherein the tissue product has a crumple resistance of 24 to 29 grams force, an average peak to valley depth of 44 to 110 microns, and a caliper of 500 microns/2 ply to 700 microns/2 ply.

36. The structured tissue product of claim 35 , wherein a web that makes up one of the at least two plies comprises a first exterior layer, an interior layer and a second exterior layer; and the interior layer contains a first wet end additive comprising an ionic surfactant and a second wet end additive comprising a non-ionic surfactant.

37. The structured tissue product according to claim 36 , wherein the first exterior layer comprises at least 50% virgin hardwood fibers.

38. The structured tissue product according to claim 37 , wherein the virgin hardwood fibers is virgin eucalyptus fibers.

39. The structured tissue product according to claim 36 , wherein the first exterior layer comprises at least 75% virgin hardwood fibers.

40. The structured tissue product according to claim 36 , wherein the interior layer comprises cannabis fibers in an amount of 1% to 10%.

41. The structured tissue product according to claim 36 , wherein the second exterior layer comprises cannabis fibers in an amount of 1% to 10%.

42. The structured tissue product according to claim 36 , the first exterior layer comprises a wet end temporary wet strength additive.

43. The structured tissue product according to claim 42 , wherein wet end temporary wet strength additive comprises glyoxalated polyacrylamide.

44. The structured tissue product according to claim 36 , wherein the first exterior layer comprises a wet end dry strength additive.

45. The structured tissue product according to claim 44 , wherein the wet end dry strength additive comprises amphoteric starch.

46. The structured tissue p

Assignees

• First Quality Tissue Llc

Inventors

• Miller Iv Byrd Tyler
• Pence Justin S
• Sealey James E

Classifications

• D21H27/005 Primary

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

• D21H5/14

  of cellulose fibres only · CPC title

• D21H11/12

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

• D21H17/28

  Starch · CPC title

• D21H17/375

  Poly(meth)acrylamide · CPC title