Absorbent structures with high strength and low MD stretch

Patent metadata

Field	Value
Publication number	US-12553189-B2
Application number	US-202016798675-A
Country	US
Kind code	B2
Filing date	Feb 24, 2020
Priority date	May 3, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

Absorbent product including a laminate of at least two plies, wherein the absorbent product has a measured Y-Connected Area parameter greater than 20 and a Surface Channel Spacing of less than 2.5 mm. The absorbent product has high strength and low machine direction stretch.

First claim

The invention claimed is:

1 . A two-ply, through air dried creped paper towel product, comprising:
a laminate of two plies; a surface having a first edge and a second edge opposite to the first edge, the surface having a plurality of first channels and corresponding first ridges that extend in a continuous manner across the surface in a first direction from the first edge to the second edge of the surface in an unbroken manner and a plurality of second ridges that extend perpendicularly from the plurality of first ridges, the plurality of first ridges and the plurality of second ridges forming a plurality of pockets within the plurality of first channels, the first channels having a channel depth between 0.60 mm to 0.80 mm, wherein the product has a measured Y-Connected Area parameter greater than 20%, and a Surface Channel Spacing of less than 2.5 mm,
wherein the product has an absorbent capacity to MD stretch ratio of greater than 1.2,
wherein the product has an absorbent capacity greater than 12.2 g/g, and wherein the paper towel product is produced without cellulase enzymes.

2 . The paper towel product of claim 1 , wherein the product has a ball burst to MD stretch ratio of greater than 100.

3 . The paper towel product of claim 1 , wherein (ball burst X absorbent capacity)/MD stretch of the product has a value greater than 1250.

4 . The paper towel product of claim 1 , wherein the first channels have a channel angle relative to machine direction between 5 and 25 degrees.

5 . The paper towel product of claim 1 , wherein the product has an Str value less than 0.15.

6 . The paper towel product of claim 1 , wherein the product has an Str value of less than 0.15 and a channel angle relative to machine direction greater than 2 degrees.

7 . The paper towel product of claim 1 , wherein the product has an absorbent capacity of at least 12.9 g/g.

8 . The paper towel product of claim 1 , wherein the product has an absorbent capacity of at least 14.2 g/g.

9 . The paper towel product of claim 1 , wherein the product has a basis weight in the range of 39 gsm to 42 gsm.

10 . The paper towel product of claim 1 , wherein at least some of the plurality of second ridges extend from one of the plurality of first ridges to another one of the plurality of first ridges.

Assignees

• First Quality Tissue Llc

Inventors

• Sealey Ii James E
• Pence Justin S
• Begin Marc Paul
• Korkowski Zachary
• Miller Iv Byrd Tyler

Classifications

• A47K10/06

  combined with means for drying towels (A47K10/30 takes precedence) · CPC title

• D04H1/4282

  Addition polymers · CPC title

• D21H27/30

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

• D21H27/02

  Patterned paper (patterned coatings D21H19/66; embossing B31F1/07; prepared on the paper-making machines D21F11/00) · CPC title

• D21H17/46

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title