Soft, low lint, through air dried roll bath tissue

Patent metadata

Field	Value
Publication number	US-12460354-B2
Application number	US-202318141717-A
Country	US
Kind code	B2
Filing date	May 1, 2023
Priority date	Apr 27, 2016
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

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 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, a waviness uniformity of 27 microns or less, and a caliper greater than 510 microns/2 ply, wherein the first and second exterior layers are substantially free of any surface-deposited softener agents or lotions.

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

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

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

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

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

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

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

11 . The roll bath 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.

12 . The roll bath tissue of claim 1 , wherein the tissue has an Average Primary Amplitude of 50 microns or less and an Amplitude Uniformity of 8 microns or less.

13 . 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 8.2 to 10 TS7, a lint value of 5.0 or less, an Average Peak to Valley Waviness of 140 microns or less, and an Average Primary Amplitude of 50 microns or less, wherein the first and second exterior layers are substantially free of any surface-deposited softener agents or lotions.

14 . The roll bath tissue of claim 13 , wherein the first exterior layer comprises a wet end dry strength additive.

15 . The roll bath tissue of claim 13 , wherein the interior layer is comprised of at least 75% by weight of softwood fibers.

16 . The roll bath tissue of claim 13 , wherein the second exterior layer further comprises a wet end dry strength additive.

17 . The roll bath tissue of claim 13 , wherein the second exterior layer further comprises a temporary wet strength additive.

18 . The roll bath tissue of claim 13 , wherein the second exterior layer further comprises a dry strength additive.

19 . The roll bath tissue of claim 13 , wherein the first exterior layer further comprises a dry strength additive.

20 . The roll bath tissue of claim 13 , 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.

21 . The roll bath tissue of claim 13 , having an MD tensile strength and a CD tensile strength of at least 35 N/m and a caliper of less than 650 microns.

22 . The roll bath tissue of claim 13 , wherein the tissue further comprises a non-ionic surfactant having a hydrophilic-lipophilic balance of less than 10.

23 . The roll bath tissue of claim 13 , 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.

24 . The roll bath tissue of claim 13 , wherein the tissue has an Amplitude Uniformity of 8 microns or less.

25 . 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 softness of greater than 90 Hand Feel (HF), a lint value of 5.0 or less, an Average Peak to Valley Waviness of 140 microns or less, and an Average Primary Amplitude of 50 microns or less, wherein the first and second exterior layers are substantially free of any surface-deposited softener agents or lotions.

26 . The roll bath tissue of claim 25 , wherein the first exterior layer comprises a wet end dry strength additive.

27 . The roll bath tissue of claim 25 , wherein the interior layer is comprised of at least 75% by weight of softwood fibers.

28 . The roll bath tissue of claim 25 , wherein the second exterior layer further comprises a wet end dry strength additive.

29 . The roll bath tissue of claim 25 , wherein the second exterior layer further comprises a temporary wet strength additive.

30 . The roll bath tissue of claim 25 , wherein the second exterior layer further comprises a dry strength additive.

31 . The roll bath tissue of claim 25 , wherein the first exterior layer further comprises a dry strength additive.

32 . The roll bath tissue of claim 25 , 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.

33 . The roll bath tissue of claim 25 , having an MD tensile strength and a CD tensile strength of at least 35 N/m and a caliper of less than 650 microns.

34 . The roll bath tissue of claim 25 , wherein the tissue further comprises a non-ionic surfactant having a hydrophilic-lipophilic balance of less than 10.

35 . The roll bath tissue of claim 25 , 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.

36 . The roll bath tissue of claim 25 , wherein the tissue has an Amplitude Uniformity of 8 microns or less.

Assignees

• First Quality Tissue Llc

Inventors

• Sealey Ii James E
• Miller Iv Byrd Tyler

Classifications

• D21H27/30

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

• D21H17/02

  Material of vegetable origin (proteins D21H17/22; lignins D21H17/23; polysaccharides D21H17/24; rosin D21H17/62) · CPC title

• D21F13/00

  Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production (making discontinuous sheets of board in moulds D21J; drying paper, pulpboard, or cardboard, in discontinuous sheet form F26B) · CPC title

• B32B2555/02

  Diapers or napkins · CPC title

• B32B2309/105

  Thickness · CPC title