Absorbent article having an absorbent structure configured for improved donning of the article

• US 7,993,319 B2
• Filed: 04/30/2004
• Issued: 08/09/2011
• Est. Priority Date: 04/30/2004
• Status: Active Grant

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Sperl, Michael D.
• Primary Examiner(s): Anderson; Lynne
• Application Number:
  US10/835,638
• Publication Number:
  US 20050256488A1
• Time in Patent Office: 2,657 Days
• Field of Search: 604/383, 604/385.22, 604/385.101, 604/385.01, 604/358, 604/385.09, 604/385.19, 428/103, 156/252
• US Class Current: 604/385.22
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/496 in the form of pants or briefs
• CPC Class Codes: A61F 13/532 inhomogeneous in the plane of the pad

Abstract

An absorbent article generally has a longitudinal axis, a lateral axis, a front waist region, a back waist region, and a crotch region extending longitudinally between and interconnecting the front and back waist regions. The absorbent article has an outer cover stretchable in at least one direction and a liner in opposed relationship with the outer cover and stretchable in at least one direction. An absorbent structure is disposed between the liner and the outer cover and extends from the crotch region to at least one of the front waist region and the back waist region of the article. The absorbent structure has at least one weakening element disposed therein for reducing the resistance of the absorbent structure to stretching in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than zero degrees and less than 90 degrees.

Claims

1. An absorbent article having a longitudinal axis, a lateral axis, a front waist region, a back waist region, and a crotch region extending longitudinally between and interconnecting said front and back waist regions, said article comprising:

an outer cover stretchable in at least one direction;

a liner in opposed relationship with the outer cover and stretchable in at least one direction; and

an absorbent structure disposed between the liner and the outer cover and extending from the crotch region to at least one of the front waist region and the back waist region of the article, the absorbent structure having at least one weakening element disposed therein for reducing the resistance of the absorbent structure to stretching in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than zero degrees and less than 90 degrees.

2. The absorbent article set forth in claim 1 wherein the absorbent structure is stretchable in at least one direction.

3. The absorbent article set forth in claim 1 wherein the at least one weakening element reduces the resistance of the absorbent structure to stretching in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than or equal to about 30 degrees and less than 90 degrees.

4. The absorbent article set forth in claim 3 wherein the at least one weakening element reduces the resistance of the absorbent structure to stretching in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than or equal to about 60 degrees and less than 90 degrees.

5. The absorbent structure set forth in claim 1 wherein the absorbent structure has longitudinal ends and lateral side edges and the at least one weakening element extends to at least one longitudinal end of the absorbent structure.

6. The absorbent structure set forth in claim 1 wherein the absorbent structure has longitudinal ends and lateral side edges and the at least one weakening element extends to at least one lateral side edge of the absorbent structure.

7. The absorbent article set forth in claim 1 wherein the at least one weakening element is elongate and has a maximum length dimension extending in a direction that defines an angle relative to the lateral axis of the article of greater than zero degrees and less than 90 degrees.

8. The absorbent article set forth in claim 7 wherein the at least one weakening element comprises an elongate slit disposed in the absorbent structure and extending at least partially therethrough.

9. The absorbent article set forth in claim 7 wherein the at least one weakening element comprises an elongate void disposed in the absorbent structure and extending at least partially therethrough.

10. The absorbent article set forth in claim 9 wherein the void is generally elliptical.

11. The absorbent article set forth in claim 1 wherein a tangent to the at least one weakening element extends in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than zero degrees and less than 90 degrees.

12. The absorbent article set forth in claim 11 wherein the at least one weakening element comprises a non-linear slit disposed in the absorbent structure and extending at least partially therethrough.

13. The absorbent article set forth in claim 11 wherein the at least one weakening element comprises a void extending at least partially through the absorbent structure.

14. The absorbent article set forth in claim 13 wherein the void is generally elliptical.

15. The absorbent article set forth in claim 1 wherein the absorbent structure has at least two weakening elements disposed in at least one of the front waist region and the back waist region of the article, said at least two weakening elements being arranged in spaced relationship with each other along a direction that defines an angle relative to the lateral axis of the article of greater than zero degrees and less than 90 degrees.

16. The absorbent article set forth in claim 1 wherein the absorbent structure has a plurality of corner regions, at least one weakening element being disposed generally adjacent each respective corner region of the absorbent structure.

17. The absorbent article set forth in claim 16 wherein a plurality of weakening elements are disposed generally adjacent each respective corner region of the absorbent structure.

18. An absorbent article having a longitudinal axis, a lateral axis, a front waist region, a back waist region, and a crotch region extending longitudinally between and interconnecting said front and back waist regions, said article comprising:

an outer cover;

a liner in opposed relationship with the outer cover; and

an absorbent structure disposed between the liner and the outer cover and extending from the crotch region to at least one of the front waist region and the back waist region of the article, the absorbent structure having at least one elongate weakening element therein for reducing the resistance of the absorbent structure to stretching, the at least one elongate weakening element having a maximum length dimension extending in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than zero degrees and less than 90 degrees.

19. The absorbent article set forth in claim 18 wherein the at least one elongate weakening element has a maximum length dimension extending in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than zero degrees and less than or equal to about 60 degrees.

20. The absorbent article set forth in claim 18 wherein the at least one elongate weakening element has a maximum length dimension extending in a direction that defines an angle relative to the lateral axis of the absorbent article of greater than zero degrees and less than or equal to about 30 degrees.

21. The absorbent article set forth in claim 18 wherein the at least one weakening element comprises an elongate slit disposed in the absorbent structure and extending at least partially therethrough.

22. The absorbent article set forth in claim 18 wherein the at least one weakening element comprises an elongate void disposed in the absorbent structure and extending at least partially therethrough.

23. The absorbent structure set forth in claim 18 wherein the absorbent structure has longitudinal ends and lateral side edges and the at least one weakening element extends to at least one longitudinal end of the absorbent structure.

24. The absorbent structure set forth in claim 18 wherein the absorbent structure has longitudinal ends and lateral side edges and the at least one weakening element extends to at least one lateral side edge of the absorbent structure.

25. The absorbent article set forth in claim 22 wherein the void is generally elliptical.

26. The absorbent article set forth in claim 18 wherein the absorbent structure has at least two weakening elements disposed in at least one of the front waist region and the back waist region of the article, said at least two weakening elements being arranged in spaced relationship with each other in a direction that defines an angle relative to the lateral axis of the article of greater than zero degrees and less than 90 degrees.

27. The absorbent article set forth in claim 18 wherein the absorbent structure has a plurality of corner regions, at least one weakening element being disposed generally adjacent each respective corner region of the absorbent structure.

28. The absorbent article set forth in claim 27 wherein a plurality of weakening elements are disposed generally adjacent each respective corner region of the absorbent structure.

29. A stretchable absorbent structure for an absorbent article, the absorbent structure being stretchable in at least one direction and having a longitudinal axis, a lateral axis, longitudinal ends and lateral side edges, said absorbent structure having at least one weakening element disposed generally adjacent at least one of said longitudinal ends to reduce resistance of the absorbent structure to stretching, said at least one weakening element being elongate and having a maximum length dimension extending in a direction that defines an angle relative to the lateral axis of the absorbent structure of greater than zero degrees and less than 90 degrees.

30. The absorbent structure set forth in claim 29 wherein the at least one weakening element is further adjacent at least one of said side edges of the absorbent structure.

31. The absorbent structure set forth in claim 29 wherein the at least one weakening element extends to at least one longitudinal end of the absorbent structure.

32. The absorbent structure set forth in claim 30 wherein the at least one weakening element extends to at least one side edge of the absorbent structure.

33. The absorbent structure set forth in claim 30 wherein the absorbent structure has a plurality of weakening elements disposed therein, at least one of said weakening elements extending to said at least one longitudinal end, at least one other weakening element extending to said at least one side edge of the absorbent structure.

34. The absorbent structure set forth in claim 29 wherein the at least one weakening element comprises an elongate slit disposed in the absorbent structure and extending at least partially therethrough.

35. The absorbent structure set forth in claim 29 wherein the at least one weakening element comprises an elongate void disposed in the absorbent structure and extending at least partially therethrough.

36. The absorbent structure set forth in claim 29 wherein the at least one weakening element comprises a non-linear slit disposed in the absorbent structure and extending at least partially therethrough.

37. The absorbent structure set forth in claim 29 wherein the absorbent structure has a plurality of corner regions, at least one weakening element being disposed generally adjacent each respective corner region of the absorbent structure.

38. The absorbent structure set forth in claim 37 wherein a plurality of weakening elements are disposed generally adjacent each respective corner region of the absorbent structure.

39. An absorbent article having a longitudinal axis, a lateral axis, a front waist region, a back waist region, and a crotch region extending longitudinally between and interconnecting said front and back waist regions, said article comprising:

an outer cover stretchable in at least one direction;

a liner in opposed relationship with the outer cover and stretchable in at least one direction; and

an absorbent structure disposed between the liner and the outer cover and extending from the crotch region to at least one of the front waist region and the back waist region of the article, the absorbent structure having at least one weakening element disposed therein extending in the longitudinal direction for separation of the absorbent structure upon application of a donning force to the absorbent article and at least one other weakening element generally adjacent to said at least one longitudinally oriented weakening element and extending in a direction other than the longitudinal direction of the article to reduce resistance of the absorbent structure to stretching.

40. The absorbent article set forth in claim 39 wherein said at least one weakening element is formed in a longitudinal end of the absorbent structure.

41. The absorbent article set forth in claim 39 wherein said at least one other weakening element extends in the lateral direction of the article.

42. The absorbent article set forth in claim 39 wherein said at least one other weakening element extends to the at least one longitudinally oriented weakening element.

43. The absorbent article set forth in claim 39 wherein said at least one other weakening element extends to at least one lateral side edge of the absorbent structure.

46. The absorbent article set forth in claim 39 wherein said at least one other weakening element comprises a void extending at least partially through the absorbent structure.

47. The absorbent article set forth in claim 39 wherein said at least one longitudinally oriented weakening element comprises a slit disposed in the absorbent structure and extending at least partially therethrough.

48. The absorbent article set forth in claim 39 wherein said at least one longitudinally oriented weakening element comprises a void extending at least partially through the absorbent structure.

49. The absorbent article set forth in claim 39 wherein the absorbent structure is stretchable.

50. The absorbent article set forth in claim 39 wherein the at least one weakening element is elongate and has a maximum length dimension extending in the longitudinal direction of the absorbent article, said at least one other weakening element being elongate and having a maximum length dimension extending in a direction other than the longitudinal direction of the article.

44. The absorbent article set forth in 39 wherein said at least one other weakening element comprises two groups of parallel weakening elements each group of parallel weakening elements being located on opposite lateral sides of the longitudinal weakening element.

45. The absorbent article set forth in 39 wherein said at least one other weakening element comprises an elongate slit disposed in the absorbent structure and extending at least partially therethrough.