Three-dimensional substrate comprising a tissue layer

Patent metadata

Field	Value
Publication number	US-11000428-B2
Application number	US-201715453997-A
Country	US
Kind code	B2
Filing date	Mar 9, 2017
Priority date	Mar 11, 2016
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A three-dimensional substrate has a first surface, a second surface, land areas and comprises three-dimensional protrusions extending outward from the second surface of the three-dimensional substrate. The three-dimensional protrusions are surrounded by the land areas. The three-dimensional substrate is a laminate comprising at least two layers in a face to face relationship. The second layer comprise a tissue layer facing outward from the second surface of the three-dimensional substrate. The tissue layer comprises at least 80% pulp fibers by weight of the tissue layer.

First claim

What is claimed is:

1. An absorbent article having a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, the article comprising a three-dimensional substrate having a wearer-facing first surface, a second surface and land areas and comprising three-dimensional protrusions extending outward from the second surface of the three-dimensional substrate, wherein the three-dimensional protrusions are surrounded by the land areas;
wherein the three-dimensional substrate is a laminate comprising at least first and second layers in a face to face relationship, wherein the first layer is closest to and/or forms the wearer-facing first surface and the second layer is a wet laid tissue layer facing outward from the second surface of the three-dimensional substrate,
wherein the tissue layer comprises at least 70% pulp fibers by weight of the tissue layer; wherein the first and second layers have been mechanically deformed together to form the three-dimensional protrusions; and
wherein a majority of the three-dimensional protrusions comprise holes formed in the tissue layer at distal portions of the protrusions, and no holes formed in the first layer at said distal portions of the protrusions.

2. The three-dimensional substrate according to claim 1 , wherein the first layer is a liquid permeable topsheet or an acquisition layer.

3. The three-dimensional substrate according to claim 1 , wherein the three-dimensional substrate comprises at least two layers comprising fibers, wherein the three-dimensional protrusions are formed from the fibers of at least two layers of the three-dimensional substrate, wherein a majority of the three-dimensional protrusions comprise a base forming an opening, an opposed distal portion, and one or more side walls between the bases and the distal portions of the majority of the three-dimensional protrusions, and wherein the base, distal portion and the one or more side walls are formed by fibers such that the majority of the three-dimensional protrusions has only one opening at the base.

4. The three-dimensional substrate according to claim 1 , wherein the majority of the three-dimensional protrusions comprises an inside void volume.

5. The three-dimensional substrate according to Claim 1 , wherein at least 70% to 100% of the three-dimensional protrusions have holes formed in the tissue layer at the distal portions of the three-dimensional protrusions.

6. The three-dimensional substrate according to claim 1 , wherein the three-dimensional substrate consists of two layers, and wherein the first layer is the liquid permeable topsheet to form a topsheet/tissue layer laminate.

7. The three-dimensional substrate according to claim 1 , wherein the three-dimensional substrate consists of two layers, and wherein the first layer is the acquisition layer to form an acquisition layer/tissue layer laminate.

8. The three-dimensional substrate according to claim 1 , wherein the three-dimensional substrate consists of three layers, wherein the first layer is the acquisition layer and the third layer is the liquid permeable topsheet, to form topsheet/acquisition layer/tissue layer laminate, and wherein the layers of the laminate are in a face to face relationship and the first layer is in between the third layer and the second layer.

9. The three-dimensional substrate according to claim 8 , wherein the first layer and the third layer are nonwoven webs.

10. The three-dimensional substrate according to claim 1 , wherein the tissue layer as a precursor comprises a continuous network region and a plurality of discrete zones wherein the discrete zones are dispersed throughout the continuous network region.

11. The three-dimensional substrate according to claim 10 , wherein the tissue layer as a precursor further comprises a plurality of transition regions, and wherein the transition regions are positioned intermediate the continuous network region and at least some of the plurality of discrete zones.

12. The three-dimensional substrate according to claim 1 , wherein the tissue layer comprises at least 90% pulp fibers by weight of the tissue layer.

13. The absorbent article of claim 1 , comprising:
a longitudinal axis; and
a transversal axis perpendicular to the longitudinal axis;
wherein the absorbent core is located between the three-dimensional substrate and the backsheet.

14. The absorbent article according to claim 13 , wherein the three-dimensional substrate consists of three layers, wherein the first layer is the acquisition layer, the second layer is the tissue layer and the third layer is the liquid permeable topsheet, to form topsheet/acquisition layer/tissue layer laminate, and wherein a width of the acquisition layer and the tissue layer in a direction parallel to the transversal axis is less than a width of the topsheet in a direction parallel to the transversal axis of the article.

15. The absorbent article according to claim 13 , comprising a distribution layer having a dry-laid fibrous structure.

16. The absorbent article according to claim 13 , wherein the absorbent core comprises an absorbent material, and wherein the absorbent material comprises from 80% to 100% of superabsorbent polymers by total weight of the absorbent material.

Assignees

• Procter & Gamble

Inventors

• Orr Jill Marlene
• Rosati Rodrigo
• Grenier Adrien
• Chatterjee Aniruddha
• Brown Darrell Ian

Classifications

• A61F13/5116

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

• B32B2260/048

  Natural or synthetic rubber · CPC title

• B32B23/044

  of wood · CPC title

• B32B5/30

  one layer {being formed of particles, e.g. chips,} granules, powder · CPC title

• B32B2264/02

  Synthetic macromolecular particles · CPC title