Fibrous structures comprising regions having different micro-CT intensive property values and associated transition slopes

Patent metadata

Field	Value
Publication number	US-11186953-B2
Application number	US-201916542455-A
Country	US
Kind code	B2
Filing date	Aug 16, 2019
Priority date	Dec 15, 2015
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

Fibrous structures containing solid additives, and more particularly, fibrous structures containing two regions that exhibit at least one common micro-CT intensive property that differs in value and wherein the common micro-CT intensive property transitions between the two regions and methods for making same are provided.

First claim

What is claimed is:

1. A fibrous structure comprising a plurality of filaments and a plurality of solid additives, the fibrous structure further comprising a first region and a second region, wherein the first and second regions exhibit at least one common intensive property that differs in value and wherein a micro-CT density transition between the first and second regions exhibits a micro-CT density inter-region transition slope value greater than 0.0002 (g/cm 3 )/mm as measured according to the Micro-CT Test Method.

2. The fibrous structure according to claim 1 wherein the micro-CT density transition between the first and second regions exhibits a micro-CT density inter-region transition slope value of greater than 0.001 (g/cm 3 )/mm as measured according to the Micro-CT Test Method.

3. The fibrous structure according to claim 1 wherein the filaments are present in the fibrous structure at a level of less than 90% by weight of the fibrous structure on a dry basis.

4. The fibrous structure according to claim 1 wherein the 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.

5. The fibrous structure according to claim 1 wherein the filaments and solid additives are present in the fibrous structure at a weight ratio of filaments to solid additives of greater than 0 but less than 1.

6. The fibrous structure according to claim 1 wherein the filaments and solid additives are commingled together.

7. The fibrous structure according to claim 1 wherein at least one of the filaments comprises a thermoplastic polymer.

8. The fibrous structure according to claim 1 wherein the solid additives comprise fibers.

9. The fibrous structure according to claim 1 wherein at least one 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.

10. The fibrous structure according to claim 1 wherein the fibrous structure is a core component.

11. The fibrous structure according to claim 10 wherein the fibrous structure further comprises a scrim component.

12. The fibrous structure according to claim 1 wherein the fibrous structure is a floor cleaning pad.

13. The fibrous structure according to claim 1 wherein the fibrous structure comprises a liquid composition.

14. The fibrous structure according to claim 13 wherein the fibrous structure is a wet wipe.

15. A fibrous structure comprising a plurality of filaments and a plurality of solid additives, the fibrous structure further comprising a first region and a second region, wherein the first and second regions exhibit at least one common intensive property that differs in value and wherein a micro-CT density transition between the first and second regions exhibits a micro-CT density cross-region transition slope value greater than 0.0002 (g/cm 3 )/mm as measured according to the Micro-CT Test Method.

16. The fibrous structure according to claim 15 wherein the micro-CT density transition between the first and second regions exhibits a micro-CT density cross-region transition slope value greater than 0.001 (g/cm 3 )/mm as measured according to the Micro-CT Test Method.

17. The fibrous structure according to claim 15 wherein at least one of the filaments comprises a thermoplastic polymer.

18. The fibrous structure according to claim 15 wherein the solid additives comprise fibers.

19. The fibrous structure according to claim 15 wherein the fibrous structure is a floor cleaning pad.

20. The fibrous structure according to claim 15 wherein the fibrous structure comprises a liquid composition.

Assignees

• Procter & Gamble

Inventors

• Wang Fei
• Suer Michael Donald
• Algers John Daniel
• Song Cunming
• Bao Hailing
• Debeer Antonius Lambertus
• Pung David John
• Barnholtz Steven Lee
• Weisman Paul Thomas
• Bills J Michael
• King Alexander P

Classifications

• D21H27/004

  characterised by specific parameters (D21H27/008 takes precedence) · CPC title

• D21H27/002

  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

• B32B2432/00

  Cleaning articles, e.g. mops or wipes · CPC title

• D21H27/005 Primary

  relating to physical or mechanical properties, e.g. tensile strength, stretch, softness · CPC title

• D21H13/10

  Organic non-cellulose fibres · CPC title