End seal for an absorbent article

• US 20060155254A1
• Filed: 01/11/2006
• Published: 07/13/2006
• Est. Priority Date: 01/11/2005
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Kreuzer, Carsten Heinrich, Dziezok, Peter, Geilich, Ralf, Sanz, Miguel Brandt
• Granted Patent: US 8,901,367 B2
• Time in Patent Office: Days
• US Class Current: 604/378
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/539 characterised by the connection of the absorbent layers with each other or with the outer layers

Abstract

The present invention relates to absorbent articles, such as diapers and sanitary napkins, and cores useful for such articles. More specifically, the invention relates to an absorbent article having a longitudinal centerline and a transverse centerline, the absorbent article comprising an absorbent core, the core comprising a storage layer and a wearer facing side oriented towards a wearer when the article is being worn and an opposed garment facing side, the absorbent article further comprising a liquid pervious topsheet on the wearer facing side of the core and a liquid pervious backsheet on the garment facing side of the core, the core further comprising a first core wrap sheet covering the wearer facing side of the storage layer and a second core wrap sheet covering the garment facing side of the storage layer the first core wrap sheet being joined to the second core wrap sheet along at least one transverse stripe of juncture, wherein the stripe of juncture covers a total area and the stripe of juncture provides a bond strength of at least 1 N/cm between the first core wrap sheet and a second core wrap sheet as measured as tensile strength in the longitudinal direction and wherein the stripe of juncture comprises an open area of at least 20% of the total area.

Claims

1. An absorbent article extending along a longitudinal axis and a transverse axis, the absorbent article comprising:

a topsheet;

a backsheet; and

an absorbent core disposed between the topsheet and the backsheet, the core defining a wearer facing side oriented towards a wearer when the article is being worn and an opposed garment facing side, wherein the core includes

     1) a storage layer having a wearer facing side and an opposed garment facing side,

     2) a first core wrap sheet covering the wearer facing side of the storage layer, and

     3) a second core wrap sheet covering the garment facing side of the storage layer, the first core wrap sheet being joined to the second core wrap sheet along at least one transverse stripe of juncture, the stripe of juncture covering a total area;

wherein the stripe of juncture provides a bond strength of at least 1 N/cm between the first core wrap sheet and a second core wrap sheet as measured as tensile strength in the longitudinal direction, and wherein the stripe of juncture comprises an open area of at least 20% of the total area.

2. The absorbent article as recited in claim 1, wherein the stripe of juncture comprises an open area from about 30% to about 95% of the total area.

3. The absorbent article as recited in claim 1, wherein the bond strength is at least at least 2 N/cm.

4. The absorbent article as recited in claim 1, wherein the stripe of juncture comprises a plurality of threads of adhesive that are separated by a plurality of areas having no adhesive.

5. The absorbent article as recited in claim 4, wherein the threads have a diameter of less than about 2 mm, preferably less than about 1.5 mm.

6. The absorbent article as recited in claim 4, wherein the threads have a diameter of more than about 100 micrometer.

7. The absorbent article recited in claim 1 wherein the article comprises superabsorbent particles having a mean diameter.

8. The absorbent article as recited in claim 7, wherein the threads have a width of at least 0.5 times the mean diameter.

9. The absorbent article as recited in claim 7, wherein the areas having no adhesive have a width of at least 0.5 times the mean diameter.

10. The absorbent article as recited in claim 1, wherein the line of juncture has a width measured in the longitudinal direction of at least 20 mm.

11. The absorbent article as recited in claim 1, wherein at least of the first core wrap sheet and the second core wrap sheet has a basis weight from about 3 gram per m² to about 50 gram per m².

12. The absorbent article as recited in claim 1, wherein the topsheet comprises a plurality of pores having an effective aperture size of at least 2.0 square millimeters.

13. The absorbent article as recited in claim 1, wherein the topsheet is liquid pervious.

14. The absorbent article as recited in claim 1, wherein the backsheet is liquid impervious.