Elasticized absorbent article

• US 5,034,008 A
• Filed: 11/07/1989
• Issued: 07/23/1991
• Est. Priority Date: 11/07/1989
• Status: Expired due to Term

• Current Assignee: Citicorp Credit Services Incorporated (Citigroup Incorporated)
• Original Assignee: Chicopee Incorporated (Berry Global Group Inc.)
• Inventors: Breitkopf, Stephen
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Rose, Sharon
• Application Number:
  US07/432,945
• Time in Patent Office: 623 Days
• Field of Search: 604/385.2, 604/369
• US Class Current: 604/385.27
• CPC Class Codes: A61F 13/49011 the elastic means is located at the waist region
• CPC Class Codes: A61F 13/491 specially adapted for gender distinct urine discharge pattern
• CPC Class Codes: A61F 2013/49023 being textured, e.g. corrugated
• CPC Class Codes: A61F 2013/530007 being made from pulp
• CPC Class Codes: A61F 2013/530481 having superabsorbent materials, i.e. highly absorbent polymer gel materials
• CPC Class Codes: A61F 2013/53908 with adhesive

Abstract

An elasticized absorbent article, illustrated as an elastic waistband disposable diaper, includes an absorbent panel, a backsheet underlying the absorbent panel, and a liquid-permeable topsheet which overlies the absorbent panel. Each of the backsheet and topsheet includes at least one longitudinal end marginal portion which extends beyond an end edge of the absorbent panel. A waist elastic element is provided which is positioned between the end marginal portions of the topsheet and backsheet for forming an elastic waistband region. Notably, the elastic waistband element is provided with a substantially overall adhesive coating, preferably in either slot-coated or spray-coated filament form, for securement to the associated topsheet. The topsheet is thereby elastically gathered to provide a textured and cushioned surface at the inside region of the waistband for enhanced comfort. The preferred provision of another substantially overall adhesive coating for securing the waist elastic element to the backsheet desirably enhances the containment characteristics of the diaper.

Claims

1. An elasticized disposable absorbent article, comprising:

an absorbent panel having a first face and a second face;

a backsheet overlying said second face of said absorbent panel and having at least a portion which is liquid-impermeable, said backsheet having at least one end marginal portion extending beyond said absorbent panel;

a liquid-impermeable topsheet overlying said first face of said absorbent panel and comprising nonwoven fabric, said topsheet having at least one end marginal portion extending beyond said absorbent panel coextensive with and in face to face relationship with said end marginal portion of said backsheet;

a waist elastic element comprising a film material rendered elastically extensible and contractable upon heating and positioned between said end marginal portions of said topsheet and said backsheet; and

upper and lower adhesive means respectively securing said waist elastic element to said topsheet and to said backsheet, said upper adhesive means comprising a substantially overall coating of adhesive between said waist elastic element and said nonwoven fabric of said topsheet, whereby said waist elastic element elastically gathers said topsheet nonwoven fabric to form a large plurality of relatively small surface irregularities providing a textured and cushioned surface for contact with the wearer of said article for enhanced comfort.

2. The elasticized disposable absorbent article in accordance with claim 1 wherein said absorbent article comprises a disposable diaper;

said absorbent panel comprises at least one end, two opposite sides, and each of said sides has a side edge;

said coextensive marginal end portions of said backsheet and said topsheet extend longitudinally beyond said at least one end of said absorbent panel, and said waist elastic element extends transversely between said coextensive marginal end portions;

each of said backsheet and said topsheet includes opposite side marginal portions extending laterally beyond each of said side edges of said absorbent panel; and

said diaper includes leg elastic means operatively associated with said side marginal portions of said topsheet and said backsheet and said leg elastic means comprises a plurality of substantially parallel leg elastic elements positioned between respective said side marginal portions of said topsheet and said backsheet at each said opposite side of said absorbent panel.

3. The elasticized disposable absorbent article in accordance with claim 1, wherein

said nonwoven topsheet fabric comprises nonwoven fibrous material bonded substantially throughout the extent of said fabric, whereby said surface irregularities are provided in a relatively random fashion.

4. The elasticized disposable absorbent article in accordance with claim 1, wherein

said topsheet fabric comprises saturation bonded nonwoven fabric.

5. The elasticized disposable absorbent article in accordance with claim 1, wherein

said topsheet fabric comprises fusible fibrous material, said fabric being overall heat-bonded.

6. The elasticized disposable absorbent article in accordance with claim 1, wherein

said nonwoven topsheet fabric comprises nonwoven fibrous material bonded at regularly spaced apart bond points, whereby said surface irregularities are provided in a regular pattern generally corresponding to said regularly spaced apart bond points.

7. The elasticized disposable absorbent article in accordance with claim 1, wherein

said topsheet fabric comprises point-bonded, fusible fiber fabric.

8. The elasticized disposable absorbent article in accordance with claim 1, wherein

said topsheet fabric comprises latex bonded fibrous material bonded in a regular, discontinuous binder pattern.

9. The elasticized disposable absorbent article in accordance with claim 1 wherein

said adhesive coating of said upper adhesive means comprises a slot-coated adhesive.

10. An elasticized disposable absorbent article, comprising:

an absorbent panel having a first face and a second face;

a backsheet overlying said second face of said absorbent panel and having at least a portion which is liquid-impermeable, said backsheet having at least one end marginal portion extending beyond said absorbent panel;

a liquid-permeable topsheet overlying said first face of said absorbent panel and comprising nonwoven fabric, said topsheet having at least one end marginal portion extending beyond said absorbent panel coextensive with and in face to face relationship with said end marginal portion of said backsheet;

a waist elastic element comprising an elastic closed cell polyurethane foam positioned between said end marginal portions of said topsheet and said backsheet; and

upper and lower adhesive means respectively securing said waist elastic element to said topsheet and to said backsheet, said upper adhesive means comprising a substantially overall coating of adhesive between said waist elastic element and said nonwoven fabric of said topsheet, whereby said waist elastic element elastically gathers said topsheet nonwoven fabric to form a large plurality of relatively small surface irregularities providing a textured and cushioned surface for contact with the wearer of said article for enhanced comfort.

11. The elasticized disposable absorbent article in accordance with claim 10 wherein said absorbent article comprises a disposable diaper;

said absorbent panel comprises at least one end, two opposite sides, and each of said sides has a side edge;

said coextensive marginal end portions of said backsheet and said topsheet extend longitudinally beyond said at least one end of said absorbent panel, and said waist elastic element extends transversely between said coextensive marginal end portions;

each of said backsheet and said topsheet includes opposite side marginal portions extending laterally beyond each of said side edges of said absorbent panel; and

said diaper includes leg elastic means operatively associated with said side marginal portions of said topsheet and said backsheet and said leg elastic means comprises a plurality of substantially parallel leg elastic elements positioned between respective said side marginal portions of said topsheet and said backsheet at each said opposite side of said absorbent panel.

12. The elasticized disposable absorbent article in accordance with claim 10, wherein

said nonwoven topsheet fabric comprises nonwoven fibrous material bonded substantially throughout the extent of said fabric, whereby said surface irregularities are provided in a relatively random fashion.

13. The elasticized disposable absorbent article in accordance with claim 10, wherein

said topsheet fabric comprises saturation bonded nonwoven fabric.

14. The elasticized disposable absorbent article in accordance with claim 10, wherein

said topsheet fabric comprises fusible fibrous material, said fabric being overall heat-bonded.

15. The elasticized disposable absorbent article in accordance with claim 10, wherein

said nonwoven topsheet fabric comprises nonwoven fibrous material bonded at regularly spaced apart bond points, whereby said surface irregularities are provided in a regular pattern generally corresponding to said regularly spaced apart bond points.

16. THe elasticized disposable absorbent article in accordance with claim 10, wherein

said topsheet fabric comprises point-bonded, fusible fiber fabric.

17. The elasticized disposable absorbent article in accordance with claim 10, wherein

said topsheet fabric comprises latex bonded fibrous material bonded in a regular, discontinuous binder pattern.

18. The elasticized disposable absorbent article in accordance with claim 10 wherein

said adhesive coating of said upper adhesive means comprises a slot-coated adhesive.

19. An elasticized disposable absorbent article comprising:

an absorbent panel having a first face and a second face;

a backsheet overlying said second face of said absorbent panel and having at least a portion which is liquid-impermeable, said backsheet having at least one end marginal portion extending beyond said absorbent panel;

a liquid-impermeable topsheet overlying said first face of said absorbent panel and comprising nonwoven fabric, said topsheet having at least one end marginal portion extending beyond said absorbent panel co-extensive with and in face to face relationships with said end marginal portion of said backsheet;

a waist elastic element positioned between said end marginal portions of said topsheet and said backsheet; and

upper and lower adhesive means respectively securing said elastic element to said topsheet and to said backsheet, at least one of said adhesive means comprising a spray-coated, hot-melt filament adhesive and said upper adhesive means comprising a substantially overall coating of adhesive between said waist elastic element and said nonwoven fabric of said topsheet, whereby said waist elastic element elastically gathers said topsheet nonwoven fabric to form a large plurality of relatively small surface irregularities providing a textured and cushioned surface for contact with the wearer of said article for enhanced comfort.

20. The elasticized disposable absorbent article in accordance with claim 19 wherein said absorbent article comprises a disposable diaper;

said absorbent panel comprises at least one end, two opposite sides, and each of said sides has a side edge;

said coextensive marginal end portions of said backsheet and said topsheet extend longitudinally beyond said at least one end of said absorbent panel, and said waist elastic element extends transversely between said coextensive marginal end portions;

each of said backsheet and said topsheet includes opposite side marginal portions extending laterally beyond each of said side edges of said absorbent panel; and

said diaper includes leg elastic means operatively associated with said side marginal portions of said topsheet and said backsheet and said leg elastic means comprises a plurality of substantially parallel leg elastic elements positioned between respective said side marginal portions of said topsheet and said backsheet at each said opposite side of said absorbent panel.

21. The elasticized disposable absorbent article in accordance with claim 19, wherein

said adhesive coating of said upper adhesive means comprises said spray-coated, hot-melt filament adhesive.

22. The elasticized disposable absorbent article in accordance with claim 19, wherein

said lower adhesive means comprises a substantially overall coating of said spray-coated, hot-melt filament adhesive.

23. The elasticized disposable absorbent article in accordance with claim 19, wherein

said upper and lower adhesive means comprise said spray-coated, hot-melt filament adhesive.

24. The elasticized disposable absorbent article in accordance with claim 19, wherein

said nonwoven topsheet fabric comprises nonwoven fibrous material bonded substantially throughout the extent of said fabric, whereby said surface irregularities are provided in a relatively random fashion.

25. The elasticized disposable absorbent article in accordance with claim 19, wherein

said topsheet fabric comprises saturation bonded nonwoven fabric.

26. The elasticized disposable absorbent article in accordance with claim 19, wherein

said topsheet fabric comprises fusible fibrous material, said fabric being overall heat-bonded.

27. The elasticized disposable absorbent article in accordance with claim 19, wherein

said nonwoven topsheet fabric comprises nonwoven fibrous material bonded at regularly spaced apart bond points, whereby said surface irregularities are provided in a regular pattern generally corresponding to said regularly spaced apart bond points.

28. The elasticized disposable absorbent article in accordance with claim 19, wherein

said topsheet fabric comprises point-bonded, fusible fiber fabric.

29. The elasticized disposable absorbent article in accordance with claim 19 wherein

said topsheet fabric comprises latex bonded fibrous material bonded in a regular, discontinuous binder pattern.