Absorbent article

• US 7,888,549 B2
• Filed: 05/29/2007
• Issued: 02/15/2011
• Est. Priority Date: 11/30/2004
• Status: Active Grant

• Current Assignee: Essity Hygiene and Health Aktiebolag
• Original Assignee: SCA Hygiene Products AB (Industrivärden AB)
• Inventors: Asp, Fredrik, Johansson, Marie, Jansson, Filip
• Primary Examiner(s): Deak; Leslie R
• Assistant Examiner(s): Wiest; Philip R
• Application Number:
  US11/806,037
• Publication Number:
  US 20070233029A1
• Time in Patent Office: 1,358 Days
• Field of Search: 604317-326, 604378-384, 60438501-38514
• US Class Current: 604/380
• CPC Class Codes: A61F 13/4704 having preferential bending zones, e.g. fold lines or grooves
• CPC Class Codes: A61F 13/49001 having preferential bending zones, e.g. fold lines or grooves
• CPC Class Codes: A61K 35/32 Bones; Osteocytes; Osteoblasts; Tendons; Tenocytes; Teeth; Odontoblasts; Cartilage; Chondrocytes; Synovial membrane
• CPC Class Codes: A61K 38/30 Insulin-like growth factors, i.e. somatomedins, e.g. IGF-1, IGF-2 insulin-like growth factor binding protein A61K38/1754

Abstract

An absorbent article having an absorbent core and a cover enclosing the absorbent core. The absorbent core is provided with at least two slits or grooves diverging from a crotch region of the absorbent core in a direction towards one transverse edge of the absorbent core and terminating inside the respective longitudinal edge as well as the respective transverse edge of the absorbent core. These slits or grooves form folding guides along which the article can be formed into a shape having a narrow crotch width.

Claims

1. An absorbent article comprising an absorbent core and a cover enclosing the absorbent core, said absorbent core having either one layer or a plurality of layers, said cover comprising a liquid pervious inner cover on the wearer facing side of the absorbent core and a liquid impervious cover on the garment facing side of the absorbent core, said article having a longitudinal direction extending from a front portion of the article to a rear portion of the article and a transverse direction that is perpendicular to the longitudinal direction, the rear portion either includes fasteners to be fastened to the front portion or is joined to the front portion at a seam, and the article further comprises, as seen in its longitudinal direction, a crotch portion between the front portion and the rear portion, said absorbent core having an elongated shape and comprises a pair of longitudinal edges extending in the longitudinal direction and a front and a back transverse edge, said core having a crotch region and at least one outer region as seen in the longitudinal direction of the article, said outer region or regions being located adjacent the respective transverse edge of the absorbent core, said absorbent core further being provided with at least two slits or grooves, each of said at least two slits or grooves having a first end and a second end and being arranged to extend starting from a location in the crotch region of the absorbent core on one side of a transverse crotch line that extends through a crotch point of the absorbent core, such that both first and second ends are on the one side of the transverse crotch line, to diverge in a direction towards one of the transverse edges that is also on the one side of the transverse crotch line, and to terminate inside the respective longitudinal edge as well as the respective transverse edge of the absorbent core, the crotch point being a point on the absorbent core corresponding to a point of intersection of an extensible filament when wrapped around the legs of a wearer in a figure eight configuration, wherein said at least two slits or grooves extend through the entire thickness of the absorbent core.

2. The absorbent article as claimed in claim 1, wherein said at least two slits or grooves are separated and not directly communicating with each other at their converging ends in the crotch region of the absorbent core.

3. The absorbent article as claimed in claim 1, wherein said at least two slits or grooves are communicating with each other at their converging ends in the crotch region of the absorbent core so as to form a V-shape.

4. The absorbent article as claimed in claim 1, wherein said at least two slits or grooves are areas having a lower basis weight than the surrounding areas of the absorbent core.

5. The absorbent article as claimed in claim 1, wherein said at least two slits or grooves are cuts.

6. The absorbent article as claimed in claim 1, wherein said at least two diverging slits or grooves form an angle of between 5°

and 135°

to each other.

7. The absorbent article as claimed in claim 1, wherein said at least two diverging slits or grooves form an angle of from 10°

to 120°

to each other.

8. The absorbent article as claimed in claim 1, wherein said slits or grooves have a length of at least 20 mm.

9. The absorbent article as claimed in claim 1, wherein said slits or grooves have a width of from 1 to 25 mm.

10. The absorbent article as claimed in claim 1, wherein said at least two slits or grooves are arranged to diverge in a direction towards the front transverse edge of the absorbent core.

11. An absorbent article as claimed in claim 10, wherein at least four slits or grooves are provided, at least two of which are diverging in a direction towards the front transverse edge and at least two are diverging in a direction towards the back transverse edge of the absorbent core.

12. The absorbent article as claimed in claim 11, wherein the at least two slits or grooves diverging towards the front transverse edge are spaced apart from the at least two slits or grooves diverging towards the back transverse end a smallest distance in the longitudinal direction of at least 20 mm.

13. The absorbent article as claimed in claim 11, wherein at least two slits or grooves diverging towards the front transverse edge and the at least two slits or grooves diverging towards the back transverse end are arranged on opposite sides of a transverse crotch line extending through a crotch point.

14. The absorbent article as claimed in claim 11, wherein the at least two slits or grooves diverging towards the front transverse edge are spaced apart from the at least two slits or grooves diverging towards the back transverse end a smallest distance in the longitudinal direction of at least 5 mm.

15. The absorbent article as claimed in claim 1, wherein one or more notches are provided at the respective longitudinal edges of the absorbent core in the crotch region thereof.

16. The absorbent article as claimed in claim 1, wherein the absorbent core has a substantially rectangular shape.

17. The absorbent article as claimed in claim 1, wherein said at least two diverging slits or grooves form an angle of from 20°

to 60°

to each other.

18. The absorbent article as claimed in claim 1, wherein said slits or grooves have a length of at least 30 mm.

19. The absorbent article as claimed in claim 1, wherein said slits or grooves have a width of from 5 to 15 mm.

20. The absorbent article as claimed in claim 1, wherein the rear portion includes fasteners to be fastened to the front portion.

21. The absorbent article as claimed in claim 1, wherein the rear portion is joined to a front portion at a seam.

23. The absorbent article as claimed in claim 20, wherein the crotch point is located at a longitudinal center of the crotch region.

22. An absorbent article comprising an absorbent core and a cover enclosing the absorbent core, said absorbent core having either one layer or a plurality of layers, said cover comprising a liquid pervious inner cover on the wearer facing side of the absorbent core and a liquid impervious cover on the garment facing side of the absorbent core, said article having a longitudinal direction extending from a front portion of the article to a rear portion of the article and a transverse direction that is perpendicular to the longitudinal direction, and the article further comprises, as seen in its longitudinal direction, a crotch portion between the front portion and the rear portion, said absorbent core having a longitudinal axis and elongated shape, and comprises a pair of longitudinal edges extending in the longitudinal direction and a front and a back transverse edge, said core having a crotch region and at least one outer region as seen in the longitudinal direction of the article, said outer region or regions being located adjacent the respective transverse edge of the absorbent core, said absorbent core further being provided with at least two slits or grooves, said at least two slits or grooves are arranged to extend from the crotch region of the absorbent core toward a respective one of the transverse edges and said at least two slits or grooves diverge outwardly from the longitudinal axis as said at least two slits or grooves extend in a direction that extends from a transverse crotch line extending through a crotch point of the absorbent core towards the respective one of the transverse edges of the absorbent core over the entire length of each respective slit or groove, and to terminate inside the respective longitudinal edge as well as the respective transverse edge of the absorbent core, said at least two slits or grooves being longitudinally offset from the transverse centerline, and the crotch point being a point on the absorbent core corresponding to a point of intersection of an extensible filament when wrapped around the legs of a wearer in a figure eight configuration, wherein said at least two slits or grooves extend through the entire thickness of the absorbent core.

24. An absorbent article comprising an absorbent core and a cover enclosing the absorbent core, said absorbent core having either one layer or a plurality of layers, said cover comprising a liquid pervious inner cover on the wearer facing side of the absorbent core and a liquid impervious cover on the garment facing side of the absorbent core, said article having a longitudinal direction extending from a front portion of the article to a rear portion of the article and a transverse direction that is perpendicular to the longitudinal direction, the rear portion either includes fasteners to be fastened to the front portion or is joined to the front portion at a seam, and the article further comprises, as seen in its longitudinal direction, a crotch portion between the front portion and the rear portion, said absorbent core having a longitudinal axis and elongated shape, and comprises a pair of longitudinal edges extending in the longitudinal direction and a front and a back transverse edge, said core having a crotch region and at least one outer region as seen in the longitudinal direction of the article, said outer region or regions being located adjacent the respective transverse edge of the absorbent core, said absorbent core further being provided with at least two slits or grooves, said at least two slits or grooves are arranged to extend from the crotch region of the absorbent core toward a respective one of the transverse edges and said at least two slits or grooves diverge outwardly from the longitudinal axis as said at least two slits or grooves extend in a direction that extends from a transverse crotch line extending through a crotch point of the absorbent core towards the respective one of the transverse edges of the absorbent core over the entire length of each respective slit or groove, and to terminate inside the respective longitudinal edge as well as the respective transverse edge of the absorbent core, said at least two slits or grooves being longitudinally offset from the transverse centerline, and the crotch point being a point on the absorbent core corresponding to a point of intersection of an extensible filament when wrapped around the legs of a wearer in a figure eight configuration, wherein said at least two slits or grooves extend through the entire thickness of the absorbent core.