Refastenable absorbent article and a method of applying thereof

• US 7,524,313 B2
• Filed: 11/08/2002
• Issued: 04/28/2009
• Est. Priority Date: 04/02/1996
• Status: Expired due to Fees

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Henrich, Thomas, Kline, Mark James, Robles, Miguel Alvaro
• Primary Examiner(s): Stephens; Jacqueline F.
• Application Number:
  US10/291,057
• Publication Number:
  US 20030100879A1
• Time in Patent Office: 2,363 Days
• Field of Search: 604/389, 604/386, 604/394, 604/396, 604/385.01
• US Class Current: 604/389
• CPC Class Codes: A61F 13/15 Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body non-absorbent catamenial receptacles A61F5/44; Supporting or fastening means therefor; Tampon applicators
• CPC Class Codes: A61F 13/49015 the elastic means being elastic panels
• CPC Class Codes: A61F 13/565 pants type diaper
• CPC Class Codes: A61F 13/62 Mechanical fastening means, A61F13/5611, A61F13/5616, A61F13/581, A61F13/66 take precedence; Fabric strip fastener elements, e.g. hook and loop
• CPC Class Codes: A61F 13/622 Fabric strip fastener elements, e.g. hook and loop
• CPC Class Codes: A61F 2013/15886 by spot bonding
• CPC Class Codes: Y10T 428/24008 including fastener for attaching to external surface
• CPC Class Codes: Y10T 428/24017 Hook or barb
• CPC Class Codes: Y10T 428/24025 Superposed movable attached layers or components
• CPC Class Codes: Y10T 428/24479 including variation in thickness
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/2481 including layer of mechanically interengaged strands, strand-portions or strand-like strips
• CPC Class Codes: Y10T 442/674 Nonwoven fabric with a preformed polymeric film or sheet
• CPC Class Codes: Y10T 442/679 Natural or synthetic rubber sheet or film
• CPC Class Codes: Y10T 442/69 Autogenously bonded nonwoven fabric

Abstract

Absorbent articles such as disposable diapers, incontinent briefs, diaper holders, training pants and the like, having elastomeric ear panels and a fastening system that provides the user with different options as to how the absorbent article may be fitted to and removed from the wearer. The absorbent articles allow the wearer to choose between conventional and pull-on diaper configurations, or combinations thereof, and properly and comfortably fit a large range of wearer sizes. Further, the absorbent articles can be pulled on and/or off as a pant. This feature is provided by the ear panels which maintain sufficient tension to hold the diaper on the wearer throughout the period of use without harming the wearer'"'"'s skin, while providing enough stretch to allow the diaper to be pulled up or down over the wearer'"'"'s hips. The fastening system is refastenable for convenience yet strong enough to maintain the diaper in a fastened configuration without becoming detached if the diaper is pulled on or off the wearer.

Claims

1. A pant-like disposable absorbent article having a front waist region, a rear waist region, and a crotch region disposed therebetween, the pant-like disposable absorbent article including an elastically extensible ear flap attached to the front waist region, an elastically extensible ear panel attached to the rear waist region, wherein the elastically extensible ear flap and the elastically extensible ear panel are discrete, and a mechanical refastenable fastening system, the mechanical refastenable fastening system comprising:

an engaging component attached to the elastically extensible ear panel and

an elastically extensible landing component integral with the elastically extensible ear flap, wherein the engaging component is releasably attached to the integral landing component such that the pant-like disposable absorbent article is in a pull-on configuration.

2. The pant-like disposable absorbent article of claim 1, wherein the engaging component comprises hooks.

3. The pant-like disposable absorbent article of claim 1, wherein the landing component comprises loops.

4. The pant-like disposable absorbent article of claim 1, wherein the engaging component is joined to the pant-like disposable absorbent article by a joining means selected from the group consisting of adhesives, cohesives, heat, pressure, ultrasound, and any combination thereof.

5. The pant-like disposable absorbent article of claim 1, wherein the pant-like disposable absorbent article forms a waist hoop which has a relaxed waist hoop circumference between about 280 mm and 750 mm.

6. The pant-like disposable absorbent article of claim 1, wherein the pant-like disposable absorbent article forms a waist hoop which has a fully stretched waist hoop circumference between about 550 mm and 1450 mm.

7. The pant-like disposable absorbent article of claim 1, wherein the extensible ear panel is capable of extending between about 150% and about 300%.

8. The pant-like disposable absorbent article of claim 7, wherein a force required to extend the extensible ear panel is less than about 3,000 grams.

9. The pant-like disposable absorbent article of claim 1, wherein the extensible ear panel comprises an elastomeric portion having a recovery force greater than about 250 grams when the extensible ear panel is extended between about 30% and about 70%.

10. The pant-like disposable absorbent article of claim 1, wherein the engaging component comprises an inboard edge that is parallel to a closure member major axis which is nonparallel to a longitudinal centerline of the pant-like disposable absorbent article.

11. A pant-like disposable absorbent article having a front waist region a rear waist region, and a crotch region disposed therebetween, the pant-like disposable absorbent article including an elastically extensible ear flap attached to the front waist region, an elastically extensible ear panel attached to the rear waist region, wherein the elastically extensible ear flap and the elastically extensible ear panel are discrete and a mechanical refastenable fastening system, the mechanical refastenable system comprising:

a plurality of engaging components attached to the elastically extensible ear panel and

an elastically extensible landing component integral with the elastically extensible ear flap, wherein the engaging components are releasably attached to the integral landing component such that the pant-like disposable absorbent article is in a pull-on configuration.

12. The pant-like disposable absorbent article of claim 11, wherein the extensible ear panel is fully extended with an applied force of less than 3,000 grams.

13. The pant-like disposable absorbent article of claim 11, wherein the shape of the plurality of engaging components is selected from a group consisting of rectangles, circles, triangles, polygons, or any combination thereof.

14. A disposable absorbent article for wearing about the lower torso of a wearer, the disposable absorbent article having a first waist region, a second waist region, and a crotch region disposed between the first waist region and the second waist region, a first longitudinal edge, and a second longitudinal edge;

the disposable absorbent article further comprising;

a containment assembly comprising;

a topsheet;

a backsheet joined to the topsheet; and

an absorbent core disposed between a portion of the topsheet and the backsheet;

a first and a second discrete elastically extensible ear flap, wherein the first and the second discrete elastically extensible ear flaps are each attached to the first waist region, wherein the first discrete elastically extensible ear flap extends laterally outward from the first longitudinal edge, and the second discrete elastically extensible ear flap extends laterally outward from the second longitudinal edge;

a first and a second discrete elastically extensible ear panel, wherein the first and the second discrete elastically extensible ear panels are each attached to the second waist region, wherein the first discrete elastically extensible ear panel extends laterall outward from the first longitudinal edge, and the second discrete elastically extensible ear panel extends laterally outward from the second longitudinal edge; and

a mechanical refastenable fastening system including a first engaging component, a second engaging component, a first elastically extensible landing component, and a second elastically extensible landing component;

wherein the first engaging component is joined to the first ear panel, and the second engaging component is joined to the second ear panel, wherein the first landing component is integral with the first ear flap, and the second landing component is integral with the second ear flap, wherein the first engaging component is releasably engaged with the first landing component, and the second engaging component is engaged with the second landing component such that the disposable absorbent article is in a pull-on configuration.

15. The disposable absorbent article of claim 14, wherein the first engaging component and the second engaging component are joined to the first ear panel and the second ear panel, respectively, by a joining means selected from the group consisting of adhesives, cohesives, heat, pressure, ultrasound, and any combination thereof.

16. The disposable absorbent article of claim 14, wherein the disposable absorbent article forms a waist hoop which has a relaxed waist hoop circumference between about 280 mm and 750 mm.

17. The disposable absorbent article of claim 14, wherein the disposable absorbent article forms a waist hoop which has a fully stretched waist hoop circumference between about 550 mm and 1450 mm.

18. The disposable absorbent article of claim 14, wherein the first and the second discrete elastically extensible ear panels are capable of extending between about 150% and about 300% with an applied force of less than about 3000 grains.

19. The disposable absorbent article of claim 14, wherein each of the first discrete elastically extensible ear panel and the second discrete elastically extensible ear panel comprise an elastomeric portion having a recovery force greater than about 250 grams when the first and second discrete elastically extensible ear panels are extended between about 30% and about 70%.

20. The pant-like disposable absorbent article of claim 14, wherein each of the first and second engaging components comprise an inboard edge that is parallel to a closure member major axis which is nonparallel to a longitudinal centerline of the disposable absorbent article.