Nonwoven material having discrete three-dimensional deformations with wide base openings

Patent metadata

Field	Value
Publication number	US-10045888-B2
Application number	US-201514844459-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Sep 12, 2014
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

Nonwoven materials having discrete three-dimensional deformations therein forming protrusions that extend outward from the first surface of the nonwoven material and wide base openings adjacent to the second surface of the nonwoven material are disclosed. The nonwoven materials include multiple fibers that extend from the base of the protrusions to the distal end of the protrusions, and contribute to form a portion of the sides and cap of a protrusion. Such fibers may at least substantially surround the sides of the protrusions.

First claim

What is claimed is:

1. A nonwoven laminate comprising a plurality of fibers, the laminate comprising:
a first nonwoven layer of the laminate comprising a first surface of the laminate;
a second nonwoven layer of the laminate comprising a second surface of the laminate, wherein the first nonwoven layer is joined to the second nonwoven layer;
a generally planar first region having an original basis weight formed in the first and second nonwoven layers; and
a plurality of discrete integral second regions that comprise deformations forming protrusions of fibers extending outwardly from the first surface and openings in the second surface, wherein the plurality of discrete integral second regions are formed in the first and second nonwoven layers, and wherein at least a majority of the protrusions comprise:
a base proximate to the first surface;
an opposed distal end extending outwardly from the base;
walls of the fibers between the base and the distal end, wherein the walls have interior surfaces, which define a base opening having a base opening width; and
a cap of the fibers comprising the distal end having a distal end basis weight,

wherein for each of the at least the majority of the protrusions, multiple fibers extend from the base to the distal end, and contribute to form a portion of the walls, which:
completely surround all sides and ends of the protrusion; and
have a wall basis weight, which is less than the original basis weight and also less than the distal end basis weight.

2. The nonwoven laminate of claim 1 , wherein the first and second nonwoven layers are nested within the at least the majority of the protrusions.

3. The nonwoven laminate of claim 1 , wherein the at least the majority of the protrusions are substantially hollow.

4. The nonwoven laminate of claim 1 , wherein at least a portion of the fibers in the distal ends of the at least the majority of the protrusions are bonded together at tip bond sites.

5. The nonwoven laminate of claim 1 , wherein at least a portion of the fibers in the generally planar first region and outside the base of the at least the majority of the protrusions are bonded together.

6. An absorbent article comprising the nonwoven laminate of claim 1 , wherein the absorbent article comprises an absorbent core, and wherein the nonwoven laminate is oriented in the absorbent article so that the distal portions of the at least the majority of the protrusions are oriented toward the absorbent core.

7. An absorbent article comprising the nonwoven laminate of claim 1 , wherein the absorbent article comprises an absorbent core, and wherein the nonwoven laminate is oriented in the absorbent article so that the distal portions of the at least the majority of the protrusions are oriented away from the absorbent core.

8. The nonwoven laminate of claim 1 , wherein the at least the majority of the protrusions have a bulbous configuration.

9. The nonwoven laminate of claim 1 , wherein the at least the majority of the protrusions have widths that vary along their lengths.

10. The nonwoven laminate of claim 1 , wherein the walls comprise thinned fibers.

11. The nonwoven laminate of claim 1 , wherein at least some of the fibers of the walls are broken fibers.

12. The nonwoven laminate of claim 1 , wherein at least 30% of the fibers of the walls are broken fibers.

13. The nonwoven laminate of claim 1 , wherein the at least the majority of the protrusions have caps with widest widths of 1.5-5 millimeters.

14. The nonwoven laminate of claim 13 , wherein the at least the majority of the protrusions have heights of 1-6 millimeters.

15. A nonwoven laminate comprising a plurality of fibers, the laminate comprising:
a first nonwoven layer of the laminate comprising a first surface of the laminate;
a second nonwoven layer of the laminate comprising a second surface of the laminate, wherein the first nonwoven layer is joined to the second nonwoven layer;
a generally planar first region having an original basis weight formed in the first and second nonwoven layers; and
a plurality of discrete integral second regions that comprise deformations forming protrusions of fibers extending outward from the first surface and openings in the second surface, wherein the plurality of discrete integral second regions are formed in the first and second nonwoven layers, wherein the first and second nonwoven layers are nested within at least a majority of the protrusions, and wherein each of the at least the majority of the protrusions comprise:
a base proximate to the first surface;
an opposed distal end extending outward from the base;
walls of the fibers between the base and the distal end, wherein the walls have interior surfaces, which define a base opening having a base opening width; and
a cap of the fibers comprising the distal end having a distal end basis weight,

wherein for each of the at least the majority of the protrusions, multiple fibers extend from the base to the distal end, and contribute to form a portion of the walls, which:
completely surround all sides and ends of the protrusion; and
have a wall basis weight, which is less than the original basis weight and also less than the distal end basis weight.

16. The nonwoven laminate of claim 15 , wherein the at least the majority of the protrusions have widths that vary along their lengths.

17. The nonwoven laminate of claim 15 , wherein the walls comprise thinned fibers.

18. The nonwoven laminate of claim 15 , wherein at least some of the fibers of the walls are broken fibers.

19. The nonwoven laminate of claim 15 , wherein the at least the majority of the protrusions have caps with widest widths of 1.5 millimeters to 5 millimeters.

20. The nonwoven laminate of claim 19 , wherein the at least the majority of the protrusions have heights of 1 millimeter to 6 millimeters.

Assignees

• Procter & Gamble

Inventors

• Strube John Brian
• Orr Jill Marlene
• Knapmeyer James Terry
• Rosati Rodrigo
• Grenier Adrien

Classifications

• D10B2509/02

  Bandages, dressings or absorbent pads · CPC title

• D10B2403/0111

  One hairy surface, e.g. napped or raised (for pile fabrics D03D27/00, D04B1/02, D04B21/02) · CPC title

• D04H13/00

  Other non-woven fabrics · CPC title

• D04H1/74

  the fibres being orientated, e.g. in parallel {(anisotropic fleeces)} · CPC title

• D04H1/559

  the fibres being within layered webs · CPC title