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1. WO2020112959 - MATÉRIAUX NON TISSÉS TRIDIMENSIONNELS ET LEURS PROCÉDÉS DE FABRICATION

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

WHAT IS CLAIMED IS:

1. A nonwoven material comprising a plurality of fibers and extending between a first end and a second end, the nonwoven material having a material width and comprising:

a first surface and a second surface, the first surface being opposite from the second surface; an apertured zone, the apertured zone comprising:

a plurality of nodes extending away from a base plane on the first surface, a plurality of connecting ligaments interconnecting the plurality of nodes, wherein a majority of the plurality of nodes include at least three connecting ligaments connecting to adjacent nodes, and

a plurality of openings providing a percent open area for the apertured zone of the nonwoven material that is greater than about 15%, as determined by the Material Sample Analysis Test Method; and

a first side zone and a second side zone, the first side zone having a first side zone width and the second side zone having a second side zone width, and

wherein each of the first side zone width and the second side zone width are between about 5% and about 25% of the nonwoven material width.

2. The nonwoven material of claim 1 , wherein each of the first side zone width and the second side zone width are between about 5% and about 15% of the nonwoven material width.

3. The nonwoven material of claim 1 , and wherein the value of the first side zone width is within about 25% of the value of the second side zone width .

4. The nonwoven material of claim 1 , wherein the plurality of openings provide a percent open area for the apertured zone of the nonwoven material that is greater than about 20%, as determined by the Material Sample Analysis Test Method.

5. The nonwoven material of claim 1 , wherein the first side zone and the second side zone each have a percent open area greater than about 0.5% and less about 10%, as determined by the Material Sample Analysis Test Method.

6. The nonwoven material of claim 1 , wherein a Poisson's ratio of the apertured zone of the

nonwoven material is less than about 3 at 1% strain, as determined by the Poisson's Ratio Test Method.

7. The nonwoven material of claim 1 , wherein the first side zone and the second side zone each extend between the first end of the nonwoven material and the second end of the nonwoven material.

8. A nonwoven material comprising a plurality of fibers and extending between a first end and a second end, the nonwoven material comprising:

an apertured zone, the apertured zone comprising a plurality of openings providing a percent open area for the apertured zone of the nonwoven material that is greater than about 15%, as determined by the Material Sample Analysis Test Method; and

a first side zone and a second side zone, each of the first side zone and the second side zone having a percent open area greater than about 0.5% and less than the percent open area of the apertured zone, as determined by the Material Sample Analysis Test Method,

wherein a ratio of a tensile strength of the first side zone plus a tensile strength of the second side zone divided by a tensile strength of the apertured zone is between about 0.8 and about 2.5.

9. The nonwoven material of claim 8, wherein the ratio of the tensile strength of the first side zone plus the second side zone divided by the apertured zone is between about 0.8 and about 1.75.

10. The nonwoven material of claim 8, wherein the apertured zone further comprises a plurality of nodes extending away from a base plane on the first surface and a plurality of connecting ligaments interconnecting the plurality of nodes, wherein a majority of the plurality of nodes include at least three connecting ligaments connecting to adjacent nodes.

11. The nonwoven material of claim 10, wherein each connecting ligament extends between only two adjacent nodes.

12. The nonwoven material of claim 8, wherein the plurality of openings provide a percent open area for the apertured zone of the nonwoven material that is greater than about 20%, as determined by the Material Sample Analysis Test Method.

13. The nonwoven material of claim 8, wherein the nonwoven material has a material width and the first side zone has a first side zone width and the second side zone has a second side zone width, and wherein each of the first side zone width and the second side zone width are between about 5% and about 25% of the nonwoven material width.

14. The nonwoven material of claim 8, wherein the first side zone has a first side zone width and the second side zone has a second side zone width, and wherein the value of the first side zone width is within about 50% of the value of the second side zone width.

15. A nonwoven material comprising a plurality of fibers and extending between a first end and a second end, the nonwoven material comprising:

an apertured zone, the apertured zone comprising a plurality of openings providing a percent open area for the apertured zone of the nonwoven material that is greater than about 15%, as determined by the Material Sample Analysis Test Method; and

a first side zone and a second side zone, each of the first side zone and the second side zone having a percent open area greater than about 0.5% and less than the percent open area of the apertured zone, as determined by the Material Sample Analysis Test Method,

wherein a Poisson's ratio of the apertured zone of the nonwoven material is less than about 3 at 1 % strain, as determined by the Poisson's Ratio Test Method.

16. The nonwoven material of claim 15, wherein the Poisson's ratio of the apertured zone of the nonwoven material is less than about 2 at 1 % strain, as determined by the Poisson's Ratio Test Method.

17. The nonwoven material of claim 15, wherein the apertured zone further comprises a plurality of nodes extending away from a base plane on the first surface and a plurality of connecting ligaments interconnecting the plurality of nodes, wherein a majority of the plurality of nodes include at least three connecting ligaments connecting to adjacent nodes.

18. The nonwoven material of claim 17, wherein each connecting ligament extends between only two adjacent nodes

19. The nonwoven material of claim 15, wherein the plurality of openings provide a percent open area for the apertured zone of the nonwoven material that is greater than about 20%, as determined by the Material Sample Analysis Test Method.

20. The nonwoven material of claim 15, wherein the nonwoven material has a material width and the first side zone has a first side zone width and the second side zone has a second side zone width, and wherein each of the first side zone width and the second side zone width are between about 5% and about 25% of the nonwoven material width.