Polymeric netting of ribbons and strands and methods of making the same

Patent metadata

Field	Value
Publication number	US-10188977-B2
Application number	US-201515121963-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Feb 28, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A polymeric netting including polymeric ribbons and polymeric strands. Each of the polymeric ribbons and strands has a length and width, with the length being the longest dimension and the width being the shortest dimension. The polymeric ribbons have a height-to-width aspect ratio of at least five to one, a major surface that is intermittently bonded to only one polymeric strand, and a height greater than the height of the one polymeric strand. An extrusion die and method useful for making the polymeric netting are also disclosed.

First claim

What is claimed is:

1. An absorbent article comprising a polymeric netting, a liquid impermeable backsheet, and an absorbent core, wherein the polymeric netting comprises polymeric ribbons and polymeric strands, each of the polymeric ribbons and strands having a length and width, wherein the length is the longest dimension and the width is the shortest dimension, wherein the polymeric ribbons have a height-to-width aspect ratio of at least three to one, a major surface that is intermittently bonded to only one polymeric strand, and a height that is greater than a height of the one polymeric strand, and wherein the absorbent core is between the polymeric netting and the backsheet, wherein the polymeric netting is between the absorbent core and the backsheet, or wherein the polymeric netting is within the absorbent core.

2. The absorbent article of claim 1 , wherein the polymeric ribbons each have a center line bisecting the major surface and first and second edges symmetrically disposed on opposite sides of the center line, wherein the major surface is intermittently bonded to only one polymeric strand at a location closer to the first edge than the second edge.

3. The absorbent article of claim 1 , wherein the polymeric ribbons each have a center line bisecting the major surface, and wherein the major surface is intermittently bonded to only one polymeric strand at a location including the center line.

4. The absorbent article of claim 1 , wherein the polymeric ribbons each have a center line bisecting the major surface and first and second edges symmetrically disposed on opposite sides of the center line, wherein the first edges of the polymeric ribbons comprise a different composition than the second edges of the polymeric ribbons.

5. The absorbent article of claim 1 , wherein the polymeric ribbons each have a center line bisecting the major surface and first and second edges symmetrically disposed on opposite sides of the center line, wherein the major surface of a first group of the polymeric ribbons is bonded to only one polymeric strand at a location between the center line and the first edge and the major surface of a second group of the polymeric ribbons is bonded to only one polymeric strand at a location between the center line at the second edge.

6. The absorbent article of claim 1 , wherein the polymeric ribbons are elastic, the polymeric strands are elastic, or both the polymeric ribbons and the polymeric strands are elastic.

7. The absorbent article of claim 1 , wherein the polymeric ribbons and polymeric strands alternate in at least a portion of the polymeric netting.

8. The absorbent article of claim 1 , wherein the height-to-width aspect ratio of at least some of the polymeric ribbons is at least 5 to 1.

9. The absorbent article of claim 1 , wherein at least some of the polymeric ribbons have a different color than at least some of the polymeric strands.

10. The absorbent article of claim 1 , wherein the absorbent core is between the polymeric netting and the backsheet.

11. The absorbent article of claim 1 , wherein the polymeric netting is between the absorbent core and the backsheet.

12. The absorbent article of claim 1 , wherein the polymeric netting is within the absorbent core.

13. The absorbent article of claim 1 , wherein the polymeric netting is a topsheet of the absorbent article, and wherein the absorbent core is between the polymeric netting and the backsheet.

14. The absorbent article of claim 1 , wherein the absorbent article further comprises a topsheet, and wherein the polymeric netting is an acquisition layer between the topsheet and the absorbent core.

15. The absorbent article of claim 1 , wherein the height of at least some of the polymeric ribbons is greater than 750 micrometers.

16. The absorbent article of claim 1 , wherein the height of at least some of the polymeric ribbons is less than 750 micrometers.

17. The absorbent article of claim 1 , wherein at least some of the polymeric ribbons have a different polymeric composition than at least some of the polymeric strands.

18. The absorbent article of claim 1 , wherein the polymeric ribbons are substantially straight.

19. The absorbent article of claim 1 , wherein the polymeric ribbons do not have a uniform height.

20. The absorbent article of claim 1 , wherein the polymeric ribbons provide flow channels along their lengths.

Assignees

• 3M Innovative Properties Co

Inventors

• Wood Leigh E
• Prioleau Lori-Ann S
• Ausen Ronald W
• Kopecky William J
• Legatt Michelle L
• Zhang Wei
• Langer-Anderson Delony L
• Galush Thomas B

Classifications

• Y10T428/298

  Physical dimension · CPC title

• B29C48/20

  one of the layers being a strip, e.g. a partially embedded strip · CPC title

• Y10T428/24273

  including aperture · CPC title

• B29C48/345

  Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising · CPC title

• B32B5/08

  the fibres or filaments of a layer being of different substances {, e.g. conjugate fibres, mixture of different fibres} · CPC title