Compressible pre-moistened fibrous structures

Patent metadata

Field	Value
Publication number	US-11896179-B2
Application number	US-202017118660-A
Country	US
Kind code	B2
Filing date	Dec 11, 2020
Priority date	Dec 15, 2015
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

Fibrous structures containing filaments and optionally, solid additives, wherein the pre-moistened fibrous structures exhibit wet compressive modulus values that are superior to known pre-moistened fibrous structures as measured according to the Wet Compressive Modulus Test Method described herein and methods for making same are provided.

First claim

What is claimed is:

1. A method for making a pre-moistened fibrous structure, the method comprising the steps of:
a. providing a fibrous structure comprising a core component and a scrim component, wherein the fibrous structure comprises thermoplastic polymer scrim filaments;
b. imparting deformations to at least one surface of the fibrous structure, wherein the fibrous structure comprises a consolidated region comprising fused thermoplastic polymer filaments present on at least one surface of the fibrous structure; and
c. applying a liquid composition to the fibrous structure to form a pre-moistened fibrous structure such that the pre-moistened fibrous structure exhibits the following:
i. a b/Basis Weight *100 value of greater than 1.50 mm/gsm as measured according to the Wet Compressive Modulus Test Method;
ii. a m value of less than −0.25 slope mm as measured according to the Wet Compressive Modulus Test Method; and
iii. a (b1−Tmax)/Tmax value of greater than 1.25 as measured according to the Wet Compressive Modulus Test Method.

2. The method according to claim 1 wherein the core component comprises a plurality of core component filaments and a plurality of core component solid additives.

3. The method according to claim 1 wherein the thermoplastic polymer scrim filaments are present in the fibrous structure at a basis weight of 10 gsm or less as measured according to the Fibrous Structure Basis Weight Test Method, adjacent to the core component.

4. The method according to claim 2 wherein the plurality of core component filaments and thermoplastic polymer scrim filaments are present in the fibrous structure at a level of less than 90% by weight of the fibrous structure on a dry basis.

5. The method according to claim 2 wherein the plurality of core component filaments and thermoplastic polymer scrim filaments are present in the fibrous structure at a level of greater than 5% by weight of the fibrous structure on a dry basis.

6. The method according to claim 2 wherein the plurality of solid additives are present in the fibrous structure at a level of greater than 10% by weight of the fibrous structure on a dry basis.

7. The method according to claim 2 wherein the plurality of core component filaments and the plurality of solid additives are commingled together.

8. The method according to claim 2 wherein at least one of the plurality of core component filaments comprises a thermoplastic polymer.

9. The method according to claim 2 wherein at least one of the plurality of solid additives comprise fibers.

10. The method according to claim 1 wherein the fibrous structure comprises at least two regions that exhibit different values of a common micro-CT intensive property as measured according to the Micro-CT Test Method.

11. The method according to claim 10 wherein the common micro-CT intensive property is selected from the group consisting of: micro-CT basis weight, micro-CT thickness, micro-CT density, and combinations thereof as measured according to the Micro-CT Test Method.

12. The method according to claim 10 wherein the common micro-CT intensive property is micro-CT basis weight.

13. The method according to claim 1 wherein the pre-moistened fibrous structure exhibits a b/Basis Weight *100 value of greater than 1.60 mm/gsm as measured according to the Wet Compressive Modulus Test Method.

14. The method according to claim 13 wherein the pre-moistened fibrous structure exhibits a b/Basis Weight *100 value of greater than 1.70 mm/gsm as measured according to the Wet Compressive Modulus Test Method.

15. The method according to claim 1 wherein the pre-moistened fibrous structure exhibits a m value of less than −0.27 slope mm as measured according to the Wet Compressive Modulus Test Method.

16. The method according to claim 15 wherein the pre-moistened fibrous structure exhibits a m value of less than −0.29 slope mm as measured according to the Wet Compressive Modulus Test Method.

17. The method according to claim 1 wherein the pre-moistened fibrous structure exhibits a (b1−Tmax)/Tmax value of greater than 1.30 as measured according to the Wet Compressive Modulus Test Method.

18. The method according to claim 17 wherein the pre-moistened fibrous structure exhibits a (b1−Tmax)/Tmax value of greater than 1.35 as measured according to the Wet Compressive Modulus Test Method.

19. The method according to claim 1 wherein the pre-moistened fibrous structure forms at least a part of a wet wipe.

20. The method according to claim 1 wherein the pre-moistened fibrous structure forms at least a part of a floor cleaning pad.

Assignees

• Procter & Gamble

Inventors

• Wang Fei
• Suer Michael Donald
• Algers John Daniel
• Barnholtz Steven Lee
• Barkey Douglas Jay
• Young Christopher Michael
• Bao Hailing
• Song Cunming
• Debeer Antonius Lambertus
• Pung David John
• Weisman Paul Thomas
• Klawitter Timothy James

Classifications

• A47L13/17 Primary

  containing cleaning agents (A47L13/19 takes precedence {; chemical compositions C11D17/049}) · CPC title

• C11D17/049

  Cleaning or scouring pads; Wipes · CPC title

• D21H27/002 Primary

  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