Fibrous structures having a contact surface

Patent metadata

Field	Value
Publication number	US-11622664-B2
Application number	US-201715834692-A
Country	US
Kind code	B2
Filing date	Dec 7, 2017
Priority date	Dec 8, 2016
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

Fibrous structures, for example pre-moistened fibrous structures, having a novel contact surface (micro protrusion surface) and methods for using the fibrous structures and making the fibrous structures are provided.

First claim

What is claimed is:

1. A fibrous structure comprising a co-formed fibrous structure comprising a plurality of fibers commingled with a plurality of first spun filaments such that the plurality of fibers are dispersed in the plurality of first spun filaments, wherein the fibrous structure further comprises a fibrous structure surface comprising one or more pillows, wherein at least one of the one or more pillows comprises a macro protrusion surface comprising a plurality of micro protrusions, wherein the plurality of micro protrusions are in the form of a contact surface of the fibrous structure and wherein the fibrous structure surface further comprises one or more knuckles, wherein the one or more knuckles do not comprise micro protrusions.

2. The fibrous structure according to claim 1 wherein the plurality of micro protrusions form a micro protrusion surface having a micro protrusion surface surface area.

3. The fibrous structure according to claim 2 wherein the micro protrusion surface surface area is less than the fibrous structure surface's surface area.

4. The fibrous structure according to claim 3 wherein the micro protrusion surface surface area is greater than 50% to about 99% of the fibrous structure surface surface area.

5. The fibrous structure according to claim 1 wherein the micro protrusions further comprises a plurality of second spun filaments.

6. The fibrous structure according to claim 5 wherein at least one of the first and second spun filaments comprises a thermoplastic polymer.

7. The fibrous structure according to claim 6 wherein the thermoplastic polymer is selected from the group consisting of: polyolefins, polyesters, polylactic acids, polycaprolactones, polyhydroxybutyrates, and mixtures thereof.

8. The fibrous structure according to claim 7 wherein the thermoplastic polymer comprises a polyolefin.

9. The fibrous structure according to claim 8 wherein the polyolefin is selected from the group consisting of: polypropylene, propylene copolymers, polyethylene, ethylene copolymers, and mixtures thereof.

10. The fibrous structure according to claim 5 wherein at least one of the first and second spun filaments exhibits a diameter of less than 50 μm as measured according to the Diameter Test Method.

11. The fibrous structure according to claim 5 wherein the second spun filaments form a scrim layer of the fibrous structure.

12. The fibrous structure according to claim 11 wherein the scrim layer is void of pulp fibers.

13. The fibrous structure according to claim 1 wherein one or more of the micro protrusions exhibits an average absolute surface height value (Sa) of greater than 250 μm as measured according to the MikroCAD Test Method.

14. The fibrous structure according to claim 1 wherein at least one of the micro protrusions is void of pin holes.

15. The fibrous structure according to claim 1 wherein at least one of the micro protrusions exhibits a Peak-to-Valley value of greater than 50 μm.

16. The fibrous structure according to claim 1 wherein at least one of the micro protrusions exhibits a Valley-to-Valley value of greater than 100 μm.

17. The fibrous structure according to claim 1 wherein the fibrous structure further comprises a fibrous structure core component comprising the co-formed fibrous structure.

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

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

20. The fibrous structure according to claim 19 wherein the liquid composition comprises a surfactant, an acidifying agent, and an amide.

Assignees

• Procter & Gamble

Inventors

• Song Cunming
• Bao Hailing
• Debeer Antonius Lambertus

Classifications

• A61F13/5116

  being formed of multiple layers (A61F13/5123 takes precedence) · CPC title

• D01F6/04

  from polyolefins · CPC title

• D01F6/62

  from polyesters · CPC title

• A61F13/51104 Primary

  the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections · CPC title

• D04H5/00

  Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length · CPC title