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

Patent metadata

Field	Value
Publication number	US-11674266-B2
Application number	US-202117163922-A
Country	US
Kind code	B2
Filing date	Feb 1, 2021
Priority date	Apr 27, 2016
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

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 method for forming structured tissue paper comprising:
forming a tissue web on a papermaking machine;
transferring the tissue web to a heated drying drum;
creping the tissue web off of the drum with a creping blade so as to form the tissue paper; and
taking the tissue paper up on a reel drum, wherein the creping blade comprises a wear resistant material and has a creping shelf of from 0.2 mm to 0.5 mm, the tissue has a lint value of less than 5.5 and a bulk softness TS7 of 10 or less, and the tissue paper is substantially free of any surface deposited softener agents or lotions.

2. The method according to claim 1 , wherein the wear resistant material is selected from the group consisting of metal oxides, ceramic materials, silicates, carbides, borides, nitrides, and combinations thereof.

3. The method according to claim 1 , wherein the wear resistant material is selected from the group consisting of alumina, chromia, zirconia, tungsten carbide, chromium carbide, zirconium carbide, tantalum carbide, titanium carbide, and combinations thereof.

4. The method according to claim 1 , wherein the creping blade has a set up angle from 10 degrees to 35 degrees.

5. The method according to claim 1 , wherein the creping blade has a blade bevel from 55 degrees to 80 degrees.

6. The method according to claim 1 , wherein the creping blade has a pocket of 90 degrees.

7. The method according to claim 1 , wherein a speed differential between the drying drum and the reel drum is 10 percent.

8. The method according to claim 1 , wherein the wear resistant material is applied to the blade by thermal spraying, physical vapor deposition, or chemical vapor deposition.

9. The method according to claim 1 , wherein the tissue paper comprises first and second exterior layers and an interior layer, and the exterior layers are substantially free of any surface deposited softener agents or lotions.

10. The method according to claim 1 , wherein the creping blade has a set up angle of from about 10 to about 35 degrees and a blade bevel of from about 55 to about 80 degrees.

Assignees

• First Quality Tissue Llc

Inventors

• Sealey Ii James E
• Miller Iv Byrd Tyler

Classifications

• B32B2250/26

  All layers being made of paper or paperboard · CPC title

• D21F5/181 Primary

  on Yankee cylinder · 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

• B32B2262/067

  Wood fibres · CPC title

• B32B2262/02

  Synthetic macromolecular fibres · CPC title