IP Library Granted Patent US 11,846,074
Granted Patent B2
US 11,846,074 · App. 16/798,753 · Granted Dec 19, 2023

Absorbent structures with high strength and low MD stretch

Inventors: James E. Sealey, II (Belton, SC); Justin S. Pence (Anderson, SC); Marc Paul Begin (Simpsonville, SC); Zachary Korkowski (Greenville, SC); Byrd Tyler Miller, IV (Easley, SC)
Assignee: First Quality Tissue, LLC
D21H27/40A47K10/06B32B29/02D04H1/4282D04H1/4291D21H17/46D21H27/007D21H27/30B32B5/024B32B2262/062B32B2307/51D10B2401/02D21H27/02
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Quick Facts
Patent No.
US 11,846,074
App. No.
16/798,753
Granted
Dec 19, 2023
Kind
B2
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.

Claims (29)

1. An absorbent product comprising a laminate of at least two plies, wherein the absorbent product has a measured Y-Connected Area parameter greater than 20, a Surface Channel Spacing of less than 2.5 mm, a CD wet tensile strength of greater than 80 N/m, an absorbency greater than 12 g/g, and a caliper of greater than 700 microns, and the absorbent product is produced without cellulase enzymes.

2. The absorbent product of claim 1 , wherein the absorbent product has a ratio of ball burst as measured in grams force to MD stretch as measured in percentage value that is greater than 100.

3. The absorbent product of claim 1 , wherein the absorbent product has a ratio of absorbency as measured in g/g to MD stretch as measured in percentage value that is greater than 1.2.

4. The absorbent product of claim 1 , wherein the absorbent product has a ratio of TSA softness to MD stretch as measured in percentage value that is greater than 4.75.

5. The absorbent product of claim 1 , wherein (TSA softness X ball burst as measured in grams force)/MD stretch as measured in percentage value of the absorbent product has a value greater than 4800.

6. The absorbent product of claim 1 , wherein (ball burst as measured in grams force X absorbency as measured in g/g)/MD stretch as measured in percentage value of the absorbent product has a value greater than 1250.

7. The absorbent product of claim 1 , wherein (TSA softness X absorbency as measured in g/g)/(MD stretch as measured in percentage value) of the absorbent product has a value greater than 60.

8. The absorbent product of claim 1 , wherein the product comprises a surface having channels, and the channels have a channel angle between 5 and 25 degrees as measured from the machine direction.

9. The absorbent product of claim 1 , wherein the product comprises a surface having channels, the channels have a channel depth between 0.60 mm to 0.80 mm.

10. The absorbent product of claim 1 , wherein the absorbent structure is produced using a wet laid TAD process.

11. The absorbent product of claim 1 , wherein at least one of the at least two plies comprise cellulosic-based fibers.

12. The absorbent product of claim 11 , wherein the cellulosic-based fibers are selected from the group consisting of wood pulp, cannabis , cotton, regenerated or spun cellulose, jute, flax, ramie, bagasse, kenaf fibers and combinations thereof.

13. The absorbent product of claim 11 , wherein at least one of the at least two plies comprise synthetic fibers.

14. The absorbent product of claim 13 , wherein the synthetic fibers are made from a polymer selected from the group consisting of polyolefin, polyester, polypropylene and polylactic acid.

15. The absorbent product of claim 11 , wherein the absorbent product comprises both synthetic and cellulosic based polymers.

16. The absorbent product of claim 1 , wherein at least one of the two plies comprise synthetic fibers.

17. The absorbent product of claim 16 , wherein the synthetic fibers are made from a polymer selected from the group consisting of polyolefin, polyester, polypropylene and polylactic acid.

18. The absorbent product of claim 1 , wherein each of the at least two plies are embossed and the at least two plies are adhered together.

19. The absorbent product of claim 18 , wherein the at least two plies are adhered together with a water-soluble adhesive mixture selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, starch based resins and mixtures thereof.

20. The absorbent product of claim 19 , wherein the water-soluble adhesive is applied to at least one ply of the at least two plies at a temperature within a range of 32 degrees C. to 66 degrees C.

21. The absorbent product of claim 19 , wherein the water-soluble adhesive mixture further comprises a water soluble cationic resin selected from the group consisting of polyamide-epichlorohydrin resins, glyoxalated polyacrylamide resins, polyethyleneimine resins, polyethylenimine resins, and mixtures thereof.

22. The absorbent product of claim 18 , wherein each of the at least two plies comprise an embossed area, wherein the embossed area occupies between approximately 5 to 15% of the total surface area of a surface of the ply.

23. The absorbent product of claim 18 , wherein each of the at least two plies comprise an embossed area having a surface, wherein a depth of embossment of the surface is between approximately 0.28 and 0.43 centimeters.

24. The absorbent product of claim 18 , wherein each of the at least two plies comprise an embossed area having a surface, wherein each embossment of the surface is between approximately 0.04 and 0.08 square centimeters in size.

25. The absorbent product of claim 1 , wherein the absorbent product is a paper towel, a disposable towel or wipe, a bath or facial tissue, or a nonwoven product.

26. The absorbent product of claim 1 , wherein a basis weight of the product is less than 43 grams per square meter.

27. The absorbent product of claim 1 , wherein a basis weight of the product is less than 50 grams per square meter.

28. The absorbent product of claim 1 , wherein the absorbent product has an Str value less than 0.15.

29. The absorbent product of claim 1 , wherein the absorbent product has an Str value of less than 0.15 and a Channel Angle greater than 2 degrees.

Assignments (2)
SECURITY INTEREST Recorded Jan 6, 2022
From: FIRST QUALITY TISSUE, LLC
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 058563/0800 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 6, 2020
From: SEALEY, JAMES E., II; PENCE, JUSTIN S.; BEGIN, MARC PAUL; KORKOWSKI, ZACHARY; MILLER, BYRD TYLER, IV
To: FIRST QUALITY TISSUE, LLC
Reel/Frame 052037/0800 →
Continuity (2)
Provisional Application 62842941 · May 3, 2019
Related Publication 20200347555A1 · Nov 5, 2020