IP Library › Granted Patent US 11,725,345
Granted Patent B2
US 11,725,345 · App. 17/177,266 · Granted Aug 15, 2023

Method of producing absorbent structures with high wet strength, absorbency, and softness

Inventors: James E. Sealey (Belton, SC); Byrd Tyler Miller, IV (Easley, SC); Kevin Brennan (Anderson, SC); James E. Bradbury (Anderson, SC); Phillip MacDonald (Anderson, SC); Taras Z. Andrukh (Greenville, SC)
Assignee: STRUCTURED I, LLC
D21H21/20D21C5/005D21H17/005D21H17/375D21H17/42D21H17/55D21H27/002D21H27/005D21H27/30
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Quick Facts
Patent No.
US 11,725,345
App. No.
17/177,266
Granted
Aug 15, 2023
Kind
B2
Abstract

A method of making an absorbent structure including forming a stock mixture of fibers, a cationic wet strength resin, an anionic polyacrylamide and a cellulase enzyme, and at least partially drying the stock mixture to form a web.

Claims (8)

1. An absorbent structure that has a CD wet tensile strength value that is at least 35% of the value of a CD dry tensile strength value of the absorbent structure, the absorbent structure comprising cellulase.

2. The absorbent structure of claim 1 , comprising two or more plies.

3. The absorbent structure of claim 2 , wherein each ply comprises a multi-layer web.

4. The absorbent structure of claim 1 , wherein the absorbent structure is a paper towel product.

5. The absorbent structure of claim 1 , wherein the absorbent structure has a HF softness of at least 46.

6. The absorbent structure of claim 1 , wherein the absorbent structure has a TS750 surface smoothness value of less than 60.

7. A rolled 2-ply through air dried paper towel that has a ratio of CD wet tensile strength to basis weight that is 3.6 or greater, the paper towel comprising cellulase.

8. A rolled 2-ply through air dried paper towel that has a CD wet tensile strength value that is at least 35% of the value of a CD dry tensile strength value of the rolled 2-ply through air dried paper towel, the paper towel comprising cellulase.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2021
From: SEALEY, JAMES E.; MILLER, BYRD TYLER, IV; BRENNAN, KEVIN; BRADBURY, JAMES E.; MACDONALD, PHILLIP; ANDRUKH, TARAS Z.
To: STRUCTURED I, LLC
Reel/Frame 055286/0793 →
Continuity (4)
Continuation 16533946 · Aug 7, 2019
Division 15687116 · Aug 25, 2017
Provisional Application 62380137 · Aug 26, 2016
Related Publication 20210164166A1 · Jun 3, 2021