Shaped Nonwoven

Patent metadata

Field	Value
Publication number	US-2017191198-A1
Application number	US-201615221626-A
Country	US
Kind code	A1
Filing date	Jul 28, 2016
Priority date	Jul 31, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

A spunbond nonwoven fabric. The fabric has a first surface and a second surface and at least a first and second visually discernible zone on at least one of the first and second surface, each of the first and second zones having a pattern of three-dimensional features, each of the three-dimensional features defining a microzone. Each microzone has a first region and a second region, the first and second regions having a difference in values for an intensive property, and wherein the difference in values for an intensive property for at least one of the microzones in the first zone is different from the difference in values for the intensive property for at least one of the microzones in the second zone.

First claim

What is claimed is:

1 . A spunbond nonwoven fabric comprising:
a. a first surface and a second surface and at least a first and second visually discernible zone on at least one of the first and second surface, each of the first and second zones having a pattern of three-dimensional features, each of the three-dimensional features defining a microzone comprising a first region and a second region, the first and second regions having a difference in values for an intensive property, and b. wherein the difference in values for an intensive property for at least one of the microzones in the first zone is different from the difference in values for the intensive property for at least one of the microzones in the second zone.

2 . The spunbond nonwoven fabric of claim 1 , wherein the difference in values for the intensive property for one of the microzones in the first zone is an order of magnitude different from the difference in values for the at least one of the microzones in the second zone.

3 . The spunbond nonwoven fabric of claim 1 , wherein the difference in values for the intensive property for one of the microzones in the first zone is 1.2× different from the difference in values for the at least one of the microzones in the second zone.

4 . The spunbond nonwoven fabric of claim 1 , wherein the difference in values for the intensive property for one of the microzones in the first zone is 1.2× to 10× different from the difference in values for the at least one of the microzones in the second zone.

5 . The spunbond nonwoven fabric of claim 1 , wherein the intensive property is thickness, and the thickness of every region is greater than zero.

6 . The spunbond nonwoven fabric of claim 1 , wherein the intensive property is basis weight, and the basis weight of every region is greater than zero.

7 . The spunbond nonwoven fabric of claim 1 , wherein the intensive property is volumetric density, and the volumetric density of every region is greater than zero.

8 . The spunbond nonwoven fabric of claim 5 , wherein the difference in thickness values for the at least one of the microzones in the first zone is between 1.5× and 22× the difference in thickness values for the at least one of the microzones in the second zone.

9 . The spunbond nonwoven fabric of claim 6 , wherein the difference in basis weight values for the at least one of the microzones in the first zone is between 3× and 50× (the difference in basis weight values for the at least one of the microzones in the second zone.

10 . The spunbond nonwoven fabric of claim 7 , wherein the difference in volumetric density values for the at least one of the microzones in the first zone is between 3× and 50× the difference in volumetric density for the at least one of the microzones in the second zone.

11 . The spunbond fabric of claim 1 , wherein fibers of the fabric are thermally bonded at the second regions on the first surface.

12 . The spunbond fabric of claim 1 , wherein fibers of the fabric are thermally bonded by point bonds within an area selected from the first region, the second region, or a combination thereof.

13 . The spunbond fabric of claim 1 , wherein fibers of the fabric are thermally bonded at the second regions on the first surface and wherein the second regions are fluid permeable.

14 . The spunbond fabric of claim 1 , wherein fibers of the fabric are thermally bonded at the second regions on the first surface and wherein the second regions are fluid permeable and wherein fibers of the fabric are thermally bonded with point bonds within an area selected from the first region, the second region, or a combination thereof.

15 . A nonwoven fabric comprising:
a. a first surface and a second surface and at least a first and second visually discernible zone on at least one of the first and second surface, each of the first and second zones having a pattern of three-dimensional features, each of the three-dimensional features defining a microzone comprising a first region and a second region, the first and second regions each being fluid permeable and having a difference in values for an intensive property, and b. wherein the difference in values for an intensive property for at least one of the microzones in the first zone is different from the difference in values for the intensive property for at least one of the microzones in the second zone.

16 . The nonwoven fabric of claim 15 , wherein the difference in values for the intensive property in the first zone is an order of magnitude different from the difference in values for the at least one of the microzones in the second zone.

17 . The nonwoven fabric of claim 15 , wherein the intensive property is thickness, and the thickness of every region is greater than zero.

18 . The nonwoven fabric of claim 15 , wherein the intensive property is basis weight, and the basis weight of every region is greater than zero.

19 . The nonwoven fabric of claim 15 , further comprising a third zone having a pattern of three-dimensional features defining a microzone comprising a first region and a second region, wherein the difference in values for an intensive property for at least one of the microzones in the third zone is different from the difference in values for the intensive property for the at least one of the microzones in both the first zone and the second zone.

20 . The nonwoven fabric of claim 15 , wherein the nonwoven fabric comprises continuous polymeric fibers selected from the group consisting of spunbond fibers and meltblown fibers.

Assignees

• Procter & Gamble

Inventors

• Ashraf Arman
• Weisman Paul Thomas

Classifications

• D04H3/16 Primary

  with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion · CPC title

• D01F6/06

  from polypropylene · CPC title

• D04H3/11

  by fluid jet · CPC title

• D01F8/06

  with at least one polyolefin as constituent · CPC title

• B08B1/006

  Operations & Transport · mapped topic