Absorbent article having traverse reinforcing element

Patent metadata

Field	Value
Publication number	US-9655788-B2
Application number	US-201414516847-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Jun 2, 2005
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

An absorbent article having a front end region, a rear end region, a central region disposed between the front and rear end regions, a fluids source area, and a transverse axis and a longitudinal axis. The absorbent article includes a topsheet, a backsheet, an absorbent core disposed between the topsheet and the backsheet, and a reinforcing structure disposed within the central region. In one aspect of the invention, the reinforcing structure includes a pair of traverse reinforcing elements each of which is formed by two traverse channels. The two traverse channels may be disposed generally parallel to the transverse axis with a reinforcement distance such that the absorbent core has an average density of in the range of about 5% to about 500% higher at the traverse reinforcing element than the fluids source area.

First claim

What is claimed is:

1. An absorbent article having a front end region, a rear end region, a central region disposed between the front and rear end regions, a fluids source area, and a transverse axis and a longitudinal axis, the absorbent article comprising:
a topsheet;
a backsheet;
an absorbent core disposed between the topsheet and the backsheet; and
a reinforcing structure, the reinforcing structure including two or more traverse reinforcing elements which are formed by two traverse channels;
wherein each of the two or more traverse reinforcing elements formed by two traverse channels cross a longitudinal centerline and form inwardly convex ellipses, wherein each of the respective two traverse channels forming one of the two or more traverse reinforcing elements cross the longitudinal axis, and
wherein at least one of the two or more traverse reinforcing elements is not located in the central region.

2. The absorbent article of the claim 1 , wherein the fluids source area has a compressive modulus and at least one of the traverse reinforcing elements has a compressive modulus which is higher than the compressive modulus of the fluids source area.

3. The absorbent article of the claim 1 , wherein at least one of the traverse reinforcing elements has a compressive modulus of about 2 psi to about 50 psi (about 13.8 kPa to about 344.7 kPa).

4. The absorbent article of the claim 1 , wherein the reinforcing structure further includes at least one longitudinal reinforcing element which is formed by two longitudinal channels.

5. The absorbent article of the claim 4 , wherein the at least one longitudinal reinforcing element includes a pair of longitudinal reinforcing elements each of which is formed by the two longitudinal channels.

6. The absorbent article of the claim 1 , wherein the traverse reinforcing elements have a traverse length of about 20% to about 100% of the minimum width of the absorbent core.

7. The absorbent article of the claim 1 , wherein the absorbent core includes about 100 weight % of cellulose fibers.

8. The absorbent article of the claim 1 , wherein the absorbent core is profiled in the longitudinal direction such that a central region has a basis weight which is greater than that of the front or back end region.

9. The absorbent article of the claim 1 , wherein each of the two channels has higher compressive portions and lower compressive portions which are alternatively repeated along the longitudinal direction of the channel.

10. The absorbent article of the claim 1 , wherein the absorbent article is a sanitary napkin, pantiliner, or incontinence article.

Assignees

• Procter & Gamble

Inventors

• Ueminami Atsushi
• Hasegawa Maki

Classifications

• A61F13/4704

  having preferential bending zones, e.g. fold lines or grooves · CPC title

• A61F13/4758

  the means preventing fluid flow in a longitudinal direction · CPC title

• A61F13/4702 Primary

  having a reinforcing member · CPC title

• A61F13/4756

  the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level · CPC title

• A61F13/533

  having discontinuous areas of compression · CPC title