Diaper article with elasticized waist panel

• US 4,861,652 A
• Filed: 10/13/1987
• Issued: 08/29/1989
• Est. Priority Date: 10/13/1987
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Roessler, Thomas H., Enloe, Kenneth M., Pazdernik, Patrick A., Koch, Debra J., Lippert, Mary E.
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): Ibrahim, Nizar M.
• Application Number:
  US07/108,515
• Time in Patent Office: 686 Days
• Field of Search: 604/385.1, 604/383, 428/913, 428/284, 156/164, 156/163
• US Class Current: 428/152
• CPC Class Codes: A61F 13/49009 with elastic means
• CPC Class Codes: Y10S 128/26 Cannula supporters
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/24446 Wrinkled, creased, crinkled or creped

Abstract

The present invention provides a distinctive absorbent article which includes a backsheet layer which delimits at least one waistband portion of the article. A substantially liquid-permeable topsheet layer is located in facing relation with an inner surface of the backsheet layer, and an absorbent body is located between the topsheet layer and the backsheet layer. An elastic member, which is connected to the waistband portion, is composed of an elastomeric, nonwoven fibrous web material, and is constructed and arranged to shirr the waistband portion.

Claims

1. An absorbent article, comprising:

a. a substantially liquid impermeable backsheet layer which delimits at least one waistband portion of said article;

b. a substantially liquid permeable topsheet layer which is located in facing relation with an inner surface of said backsheet layer;

c. an absorbent body located between said topsheet layer and said backsheet layer; and

d. an elastic member connected to a selected surface of said waistband portion, said elastic member comprising an elastomeric nonwoven fibrous web material which is arranged to shirr said waistband portion and is composed of at least one layer of nonwoven fabric secured to a meltblown fibrous elastic layer, said elastic member having an untensioned bulk thickness of at least about 0.025 in, wherein said backsheet layer, topsheet layer and elastic member provide a composite waistband which has an untensioned total bulk thickness of at least about 0.050 in, has a buckling force value within the range of about 30-50 grams-force, and has a porosity value of at least about 3 cfm/sq. ft.

2. An absorbent article as recited in claim 1, wherein said backsheet layer is composed of a substantially vapor permeable polymer film.

3. An absorbent article as recited in claim 1, wherein said backsheet layer is composed of a substantially vapor permeable polymer film.

4. An absorbent article as recited in claim 1, wherein said elastic member is secured between said backsheet and topsheet layers.

5. An absorbent article as recited in claim 1, wherein said elastic member is secured to an outer surface of said backsheet layer.

6. An absorbent article as recited in claim 1, wherein said laminated composite waistband has a buckling force value within the range of about 35-45 grams-force.

7. An absorbent article as recited in claim 1, wherein said elastic element has a bulk thickness of at least about 0.05 in.

8. An absorbent article as recited in claim 7, wherein said composite waistband has a total bulk thickness of at least about 0.075 in.

9. An absorbent article as recited in claim 1, wherein said elastic member extends across at least about 40% of the cross-directional width of said article, and wherein said elastic member covers an area within the range of about 25-80 sq. cm.

10. An absorbent article, comprising:

a. a backsheet layer delimiting at least one backsheet waistband portion, said waistband portion having a reduced-stiffness section therein;

b. a substantially liquid permeable topsheet layer which is located in facing relation with an inner surface of said backsheet layer and spans at least partially over said reduced-stiffness section of said backsheet waistband portion;

c. an absorbent body located between said topsheet layer and said backsheet layer; and

d. a vapor-permeable elastic member connected to a surface of said backsheet waistband portion and spanning at least partially over the reduced-stiffness section thereof, wherein said elastic member has an untensioned bulk thickness of at least about 0.025 in and is composed of an elastomeric, nonwoven fibrous material arranged to shirr at least the part of said topsheet layer which spans over said reduced-stiffness section of said backsheet, and wherein said elastic member and topsheet layer comprise a composite waistband portion having a porosity value of at least about 3 cfm/sq. ft. and a bulking force value within the range of about 30-50 grams-force.

11. An absorbent article as recited in claim 10, wherein

said backsheet layer has a front waistband portion and a back waistband portion;

each of said front and back waistband portions has a reduced-stiffness section therein;

a front elastic member, which is connected to an outer surface of said backsheet layer, spans completely over the reduced-stiffness section of the front waistband portion and is constructed and arranged to shirr at least a front portion of said topsheet layer; and

a rear elastic member, which is connected to an outer surface of said backsheet layer, spans completely over the reduced-stiffness section of the rear waistband portion and is constructed and arranged to shirr at least a rear portion of said topsheet layer.

12. An absorbent article as recited in claim 10, wherein said reduced-stiffness section of said backsheet waistband is located at a medial position thereof.

13. An absorbent article as recited in claim 10, wherein said waistband reduced-stiffness section comprises at least one notched recess formed into a terminal edge of said waistband.

14. An absorbent article as recited in claim 10, wherein said waistband reduced-stiffness section comprises a plurality of apertures formed through said waistband.

15. An absorbent article as recited in claim 10, wherein said waistband reduced-stiffness section comprises a pattern of embossments formed into said waistband.

16. An absorbent article as recited in claim 10, wherein said composite waistband portion has a porosity value of at least about 5 cfm/sq. ft.

17. An absorbent article as recited in claim 16, wherein said composite waistband portion has a porosity value of at least about 10 cfm/sq. ft.

18. An absorbent article as recited in claim 10, further comprising a flow barrier for reducing the migration of liquids past said waistband portion.

19. An absorbent article as recited in claim 10, wherein said flow barrier comprises a flap, which is formed from said backsheet layer and folded over to overlap onto a bodyside of said absorbent body.

20. An absorbent article as recited in claim 10, wherein said elastic member comprises at least one layer of nonwoven fabric secured to a meltblown, fibrous elastic layer.

21. An absorbent article as recited in claim 10, wherein said composite waistband region has a buckling force value within the range of about 35-45 grams-force.

22. An absorbent article, comprising:

a. a backsheet layer composed of a synthetic polymer film material and delimiting at least one backsheet waistband portion, said waistband portion having a reduced-stiffness section therein;

b. a substantially liquid permeable topsheet layer which is located in facing relation with an inner surface of said backsheet layer and spans at least partially over the reduced-stiffness section of said waistband portion;

c. an absorbent body located between said backsheet layer and said topsheet layer; and

d. an elastic member connected to a surface of said backsheet layer and spanning at least partially over the reduced-stiffness secton of said backsheet waistband portion, wherein said elastic member has an untensioned bulk-thickness of at least about 0.025 in and is composed of an elastomeric, vapor-permeable, nonwoven fibrous material which is connected and arranged to shirr at least a waistband portion of said topsheet layer, and wherein said elastic member extends across at least about 40% of the cross-directional width of said article and covers an area within the range of about 25-80 sq. cm, said elastic member and topsheet layer comprising a composite waistband region which has a buckling force value within the range of about 30-50 grams-force and a porosity of at least about 3 cfm/sq. ft.

23. An absorbent article as recited in claim 22, wherein

said backsheet layer has a front waistband portion and a back waistband portion;

each of said front and back waistband portions has a reduced-stiffness section therein;

a front elastic member, which is connected to an outer surface of said backsheet layer, spans completely over the reduced-stiffness section of the front waistband portion and is constructed and arranged to shirr at least a front portion of said topsheet layer; and

a rear elastic member, which is connected to an outer surface of said backsheet layer, spans completely over the reduced-stiffness section of the rear waistband portion and is constructed and arranged to shirr at least a rear portion of said topsheet layer.

24. An absorbent article as recited in claim 22, wherein said reduced-stiffness section of said backsheet waistband is located at a medial position thereof.

25. An absorbent article as recited in claim 22, wherein said waistband reduced-stiffness section comprises at least one notched recess formed into a terminal edge of said waistband.

26. An absorbent article as recited in claim 22, wherein said waistband reduced-stiffness section comprises a plurality of apertures formed through said waistband.

27. An absorbent article as recited in claim 22, wherein said waistband reduced-stiffness section comprises a pattern of embossments formed into said waistband.

28. An absorbent article as recited in claim 22, wherein said composite waistband region has a porosity value of at least about 5 cfm/sq. ft.

29. An absorbent article as recited in claim 22, wherein said composite waistband region has a porosity value of at least about 10 cfm/sq. ft.

30. An absorbent article as recited in claim 22, further comprising a flow barrier for reducing the migration of liquids past said waistband portion.

31. An absorbent article as recited in claim 22, wherein said flow barrier comprises a flap, which is formed from said backsheet layer and folded over to overlap onto a bodyside of said absorbent body.

32. An absorbent article as recited in claim 22, wherein said elastic member comprises at least one layer of nonwoven fabric secured to a meltblown, fibrous elastic layer.

33. An absorbent article, comprising:

a substantially liquid impermeable and substantially inelastic backsheet layer which delimits at least one backsheet waistband portion;

a substantially liquid permeable topsheet layer which is located in facing relation with an inner surface of said backsheet layer;

an absorbent body located between said topsheet layer and said backsheet layer; and

an elastic member laminated between said backsheet and topsheet layers to form a gathered, composite waistband portion, wherein said elastic member is composed of an elastomeric nonwoven fibrous material having a thickness in its untensioned, contracted state of at least about 0.025 inch, and wherein said composite waistband portion has a buckling force value within the range of about 30-50 grams-force and a porosity value of at least about 3 cfm/sq. ft.

34. An absorbent article as recited in claim 33, wherein said elastic member is composed of an elastomeric, meltblown fibrous web.

35. An absorbent article as recited in claim 33, wherein said elastic member is composed of an elastomeric, stretch-bonded laminate web.

36. An absorbent article as recited in claim 33, wherein said elastic member has a thickness of at least about 0.050 inch.

37. An absorbent article as recited in claim 33, wherein said composite waistband portion has a buckling force value within the range of about 35-45 grams-force.

38. An absorbent article as recited in claim 33, further comprising a flow barrier for reducing the migration of liquids past said waistband portion.

39. An absorbent article as recited in claim 33, wherein said flow barrier comprises a flap, which is formed from said backsheet layer and folded over to overlap onto a bodyside of said absorbent body.