Soft, low lint, through air dried tissue and method of forming the same

Patent metadata

Field	Value
Publication number	US-10844548-B2
Application number	US-201916378790-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	Apr 27, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

A multi-ply through air dried structured tissue having a bulk softness of less than 10 TS7 and a lint value of 5.0 or less. Each ply of the tissue has a first exterior layer that includes a wet end temporary wet strength additive in an amount of approximately 0.25 kg/ton and a wet end dry strength additive in an amount of approximately 0.25 kg/ton, an interior layer that includes a first wet end additive comprising an ionic surfactant, and a second wet end additive comprising a non-ionic surfactant, and a second exterior layer.

First claim

What is claimed is:

1. A tissue comprising:
a laminate of at least two plies of a multi-layer through air dried tissue, each ply comprising a first exterior layer, an interior layer and a second exterior layer, the tissue having a bulk softness of less than 10 TS7 and a lint value of 5.0 or less, wherein the first and second exterior layers are substantially free of any surface-deposited softener agents or lotions.

2. The tissue of claim 1 , wherein the first exterior layer comprises a wet end dry strength additive.

3. The tissue of claim 1 , wherein the interior layer is comprised of at least 75% by weight of softwood fibers.

4. The tissue of claim 1 , wherein the second exterior layer further comprises a wet end dry strength additive.

5. The tissue of claim 1 , wherein the second exterior layer further comprises a temporary wet strength additive.

6. The tissue of claim 1 , wherein the second exterior layer further comprises a dry strength additive.

7. The tissue of claim 1 , wherein the first exterior layer further comprises a dry strength additive.

8. The tissue of claim 1 , having an MD tensile strength and a CD tensile strength of at least 35 N/m and having a basis weight of less than 40 gsm.

9. The tissue of claim 1 , having an MD tensile strength and a CD tensile strength of at least 35 N/m and a caliper of less than 650 microns.

10. The tissue of claim 1 , wherein at least one of the first or second exterior layers comprises a surface-deposited softener agent or lotion.

11. The tissue of claim 1 , wherein the tissue further comprises a non-ionic surfactant having a hydrophilic-lipophilic balance of less than 10.

12. The tissue of claim 1 , wherein each of the at least two plies comprises an embossed area, wherein the embossed area occupies between approximately 3 to 15% of the total surface area of a surface of the ply.

13. The tissue of claim 1 , wherein the tissue is one of a sanitary, bath or facial tissue.

14. The tissue of claim 1 , wherein the tissue has a caliper of at least 500 microns.

15. The tissue of claim 1 , wherein the tissue has a caliper of 500 microns to 650 microns.

16. A roll bath tissue comprising: a laminate of at least two plies of a multi-layer through air dried tissue, each ply comprising a first exterior layer, an interior layer and a second exterior layer, the roll bath tissue having a bulk softness of less than 10 TS7, a lint value of 5.0 or less, an Average Peak to Valley Waviness of 140 microns or less, and a waviness uniformity of 27 microns or less, wherein the first and second exterior layers are substantially free of any surface-deposited softener agents or lotions.

17. The roll bath tissue of claim 16 , wherein the first exterior layer comprises a wet end dry strength additive.

18. The roll bath tissue of claim 16 , wherein the interior layer is comprised of at least 75% by weight of softwood fibers.

19. The roll bath tissue of claim 16 , wherein the second exterior layer further comprises a wet end dry strength additive.

20. The roll bath tissue of claim 16 , wherein the second exterior layer further comprises a temporary wet strength additive.

21. The roll bath tissue of claim 16 , wherein the second exterior layer further comprises a dry strength additive.

22. The roll bath tissue of claim 16 , wherein the first exterior layer further comprises a dry strength additive.

23. The roll bath tissue of claim 16 , having an MD tensile strength and a CD tensile strength of at least 35 N/m and having a basis weight of less than 40 gsm.

24. The roll bath tissue of claim 16 , having an MD tensile strength and a CD tensile strength of at least 35 N/m and a caliper of less than 650 microns.

25. The roll bath tissue of claim 16 , wherein at least one of the first or second exterior layers comprises a surface-deposited softener agent or lotion.

26. The roll bath tissue of claim 16 , wherein the tissue further comprises a non-ionic surfactant having a hydrophilic-lipophilic balance of less than 10.

27. The roll bath tissue of claim 16 , wherein each of the at least two plies comprises an embossed area, wherein the embossed area occupies between approximately 3 to 15% of the total surface area of a surface of the ply.

28. The tissue of claim 16 , wherein the tissue has a caliper of at least 500 microns.

29. The tissue of claim 16 , wherein the tissue has a caliper of 500 microns to 650 microns.

30. The tissue of claim 16 , wherein the tissue has an Average Primary Amplitude of 50 microns or less and an Amplitude Uniformity of 8 microns or less.

31. A roll bath tissue comprising: a laminate of at least two plies of a multi-layer through air dried tissue, each ply comprising a first exterior layer, an interior layer and a second exterior layer, the roll bath tissue having a bulk softness of less than 10 TS7, a lint value of 5.0 or less, an Average Primary Amplitude of 50 microns or less and an Amplitude Uniformity of 8 microns or less, wherein the first and second exterior layers are substantially free of any surface-deposited softener agents or lotions.

Assignees

• First Quality Tissue Llc

Inventors

• Sealey Ii James E
• Miller Iv Byrd Tyler

Classifications

• D21F5/181 Primary

  on Yankee cylinder · CPC title

• D21H21/20

  Wet strength agents · CPC title

• D21F11/145

  including a through-drying process · CPC title

• D21H27/30

  Multi-ply (for surface covering D21H27/18; making on paper-making machines D21F9/00, D21F11/00) · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title