Towel with quality wet scrubbing properties at relatively low basis weight and an apparatus and method for producing same

Patent metadata

Field	Value
Publication number	US-9719213-B2
Application number	US-201414561802-A
Country	US
Kind code	B2
Filing date	Dec 5, 2014
Priority date	Dec 5, 2014
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A multi-ply absorbent product having a wet scrubbing resistance greater than 120 revolutions and a basis weight of between 30 and 50 grams per square meter. A heated adhesive is applied between two single plies/webs, the multiple plies are embossed according to particular parameters, and the embossed webs are compressed with a marrying roll. The adhesive is heated to a temperature of between approximately 32 degrees C. to 66 degrees C. for application between the multiple plies. For each ply, the embossed area generally occupies between approximately 5 to 15% of the total surface area of a surface of the ply, the depth of embossment of the surface is generally between approximately 0.28 and 0.43 centimeters deep, and the embossment of the surface is generally between approximately 0.04 to 0.08 square centimeters in size.

First claim

What is claimed is:

1. An absorbent fibrous product comprising:
a laminate of at least two plies, wherein each of the at least two plies is embossed and the at least two plies are adhered together, the absorbent product having a wet scrubbing resistance greater than 120 revolutions and a basis weight of between 30 and 50 grams per square meter.

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

3. The absorbent product of claim 2 , wherein the cellulosic-based fibers are comprised of one or more of wood pulp, cannabis , cotton, regenerated or spun cellulose, jute, flax, ramie, bagasse, or kenaf fibers.

4. The absorbent product of claim 2 , wherein at least one of the at least two plies comprises synthetic fibers.

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

6. The absorbent product of claim 5 , wherein the synthetic fibers are comprised of one or more of a polyolefin, polyester and polylactic acid.

7. The absorbent product of claim 1 , wherein at least one of the at least two plies is produced using an air-laid process.

8. The absorbent product of claim 1 , wherein at least one of the at least two plies is produced using a wet-laid process.

9. The absorbent product of claim 1 , wherein the at least two plies are adhered together with a water soluble adhesive mixture comprised of polyvinyl alcohol, polyvinyl acetate, starch based resins or mixtures thereof,
wherein the water soluble adhesive is applied to at least one ply of the at least two plies at a temperature of between approximately 32 degrees C. to 66 degrees C.

10. The absorbent product of claim 9 , 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, or mixtures thereof.

11. The absorbent product of claim 1 , wherein each of the at least two plies comprises an embossed area, wherein the embossed area occupies between approximately 5 to 15% of the total surface area of a surface of the ply.

12. The absorbent product of claim 1 , wherein each of the at least two plies comprises an embossed area having a surface, wherein a depth of embossment of the surface is between approximately 0.28 and 0.43 centimeters.

13. The absorbent product of claim 1 , wherein each of the at least two plies comprises an embossed area having a surface, wherein each embossment of the surface is between approximately 0.04 and 0.08 square centimeters in size.

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

15. An absorbent fibrous product comprising:
a laminate of at least two plies, wherein each of the at least two plies is embossed and the at least two plies are adhered together,
wherein at least one of the at least two plies comprises
a first layer,
a second layer, and
a third layer located between said first and second layers,
the absorbent product having a wet scrubbing resistance greater than 120 revolutions and a basis weight of between 30 and 50 grams per square meter.

16. The absorbent product of claim 15 , wherein at least one of said first, second and third layers comprises a wet end wet strength additive.

17. The absorbent product of claim 16 , wherein the wet end wet strength additive comprises glyoxalated polyacrylamide and/or anionic polyacrylamide.

18. The absorbent product of claim 16 , wherein at least one of said first, second and third layers further comprises a wet end dry strength additive.

19. The absorbent product of claim 18 , wherein the wet end wet strength additive comprises glyoxalated polyacrylamide and/or anionic polyacrylamide and the wet end dry strength additive comprises amphoteric starch.

20. The absorbent product of claim 16 , wherein said third layer further comprises a dry strength additive.

21. The absorbent product of claim 15 , wherein at least one of said first, second and third layers comprises one or more wet end additives comprising one or more of carboxymethyl cellulose, amphoteric starch, glyoxalated polyacrylamide and/or anionic polyacrylamide.

22. The absorbent product of claim 15 , wherein the at least one of the at least two plies comprises at least 10% hardwood fibers and at least 50% softwood fibers.

23. The absorbent product of claim 15 , wherein said first layer comprises at least 40% hardwood fibers.

24. The absorbent product of claim 15 , wherein the at least one of the at least two plies comprises at least 10% cannabis bast fibers.

25. The absorbent product of claim 15 , wherein the absorbent product is one of a paper towel, a disposable towel or wipe, a bath or facial tissue, or a nonwoven product.

Assignees

• First Quality Tissue Llc

Inventors

• Miller Iv Byrd Tyler
• Pence Justin S
• Ramaratnam Karthik
• Sealey James E
• Kessling Courtney E
• Anklam Chris B
• Gahan Shannon
• Andrukh Taras Z

Classifications

• D21H27/30

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

• D21H27/007

  relating to absorbency, e.g. amount or rate of water absorption, optionally in combination with other parameters relating to physical or mechanical properties · CPC title

• D21H27/02 Primary

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

• D21H21/20

  Wet strength agents · CPC title

• D21H23/56

  Rolls (D21H23/38 takes precedence) · CPC title