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US5151092: Absorbent article with dynamic elastic waist feature having a predisposed resilient flexural hinge

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Filing Information

Inventor(s) Kenneth B. Buell · Sandra H. Clear · Danielia T. Falcone ·
Assignee(s) The Procter & Gamble Company ·
Attorney/Agent(s) Steven W. Miller ·
Primary Examiner Randall L. Green ·
Assistant Examiner Zuttarelli; A. Paul ·
Application Number US7750775
Filing date 08/22/1991
Issue date 09/29/1992
Predicted expiration date 06/13/2011
U.S. Classifications 604/385.2  · 604/358  ·
International Classifications A61F 1315  ·
Kind CodeA
International Classifications 604358;385.1;385.2 ·
Related U.S. Application DataThis is a continuation-in-part of application Ser. No. 07/715,152, filed on Jun. 13, 1991, now abandoned.
53 Claims, No Drawings


Abstract

Absorbent articles having a unique elastic waist feature improving dynamic fit as well as containment characteristics. The elastic waist feature preferably comprises an interconnecting panel zone, a first flexural hinge zone joining the interconnecting panel zone with the containment assembly, an elasticized waistband, and a second flexural hinge zone joining the elasticized waistband with the interconnecting panel zone. The elasticized waistband comprises a shaping panel zone; a waistline panel zone; and a predisposed, resilient, waistband flexural hinge zone joining the shaping panel zone and the waistline panel zone. The waistband flexural hinge zone is predisposed to allow the panel zones to flexurally bend about a defined axis or zone is resilient to provide a restoring force/moment that returns the panel zones to their preceding in-use configuration, especially when the elasticized waistband has been pretensioned by a closure system. The closure system dynamically creates/maintains lateral tension through the elasticized waistband thereby allowing the elasticized waistband to more dynamically expand and contract with the motions of the wearer. The absorbent article additionally preferably comprises a pair of elasticized side panels disposed in the second waist region. The elasticized side panels preferably comprise a "zero strain" stretch laminate and an extension panel. The present invention also relates to alternative waist features comprising "an expansive tummy panel" elasticized waistband.

Independent Claims | See all claims (53)

  1. 1. A disposable absorbent article comprising:a containment assembly comprising an absorbent core having side edges and waist edges;an elastic waist feature at least extending longitudinally outwardly from one of said waist edges of said absorbent core, said elastic waist feature comprising(a) an elasticized waistband comprising(i) a shaping panel zone being elastically extensible in at least the lateral direction,(ii) a waistline panel zone resiliently flexurally joined with said shaping panel zone, said waistline panel zone being elastically extensible in at least the lateral direction, and(iii) a predisposed, resilient, waistband flexural hinge zone joining said shaping panel zone and said waistline panel zone for allowing relative flexural bending between said shaping panel zone and said waistline panel zone when forces are applied and for providing a restoring force/moment to resiliently return said shaping panel zone and said waistline panel zone to essentially their preceding in-use configuration when the forces are removed, said waistband flexural hinge zone having a bending flexure restoring force greater than about 20 grams.sub.f ; and(b) a second flexural hinge zone joining said elasticized waistband to said containment assembly; anda closure system disposed on the absorbent article for creating/maintaining lateral tension through at least a portion of said elasticized waistband.
  2. 11. A disposable absorbent article comprising:a containment assembly comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between said topsheet and said backsheet, said absorbent core having side edges and waist edges; andan elastic waist feature at least extending longitudinally outwardly from one of said waist edges of said absorbent core, said elastic waist feature comprising(a) an interconnecting panel zone flexurally joined with said absorbent core;(b) a first flexural hinge zone joining said interconnecting panel zone with said absorbent core;(c) an elasticized waistband flexurally joined with said interconnecting panel zone, said elasticized waistband comprising(i) a shaping panel zone flexurally joined with said interconnecting panel zone, said shaping panel zone being elastically extensible in at least the lateral direction,(ii) a waistline panel zone resiliently flexurally joined with said shaping panel zone, said waistline panel zone being elastically extensible in at least the lateral direction, and(iii) a predisposed, resilient, waistband flexural hinge zone joining said shaping panel zone and said waistline panel zone for allowing relative flexural bending between said shaping panel zone and said waistline panel zone when forces are applied and for providing a restoring force/moment to resiliently return said shaping panel zone and said waistline panel zone to essentially their preceding in-use configuration when the forces are removed, said waistband flexural hinge zone having a bending flexure restoring force greater than about 20 grams.sub.f ; and(d) a second flexural hinge zone joining said shaping panel zone with said interconnecting panel zone; anda closure system disposed on the absorbent article for creating/maintaining lateral tension through at least a portion of said elasticized waistband.
  3. 35. A unitary disposable absorbent article having longitudinal edges, end edges, a first waist region, a second waist region opposed to said first waist region, an outer surface, and an inner surface, the absorbent article comprising:a containment assembly comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between said top sheet and said backsheet, said absorbent core having side edges and waist edges;an elastic waist feature at least extending longitudinally outwardly from one of said waist edges of said absorbent core, said elastic waist feature comprising(a) an interconnecting panel zone flexurally joined with said absorbent core;(b) a first flexural hinge zone joining said interconnecting panel zone with said absorbent core;(c) an elasticized waistband flexurally joined with said interconnecting panel zone, said elasticized waistband comprising(i) a shaping panel zone flexurally joined with said interconnecting panel zone, said shaping panel zone being elastically extensible in at least the lateral direction, said shaping panel zone having a edge compression stiffness greater than about 100 grams.sub.f,(ii) a waistline panel zone resiliently flexurally joined with said shaping panel zone, said waistline panel zone being elastically extensible in at least the lateral direction,(iii) a predisposed, resilient, waistband flexural hinge zone joining said shaping panel zone and said waistline panel zone for allowing relative flexural bending between said shaping panel zone and said waistline panel zone when forces are applied and for providing a restoring force/moment to resiliently return said shaping a panel zone and said waistline panel zone to essentially their preceding in-use configuration when the forces are removed, said waistband flexural hinge zone having a bending flexure restoring force greater than about 20 grams.sub.f ; and(d) a second flexural hinge zone joining said shaping panel zone with said interconnecting panel zone; anda dual tension fastening system comprising:(a) a primary fastening system for providing a side closure for the absorbent article by maintaining said first waist region and said second waist region in an overlapping configuration such that lateral tension is maintained around the circumference of the absorbent article to maintain the absorbent article on the wearer, said primary fastening system comprising:(i) a securement member disposed adjacent each of said longitudinal edges in said second waist region; and(ii) at least one landing member disposed in said first waist region, said landing member being engageable with said securement members; and(b) a waist closure system for providing a variable positioning, passively activated, waist closure for the absorbent article that dynamically maintains/creates lateral tension through at least a portion of said elasticized waistband, said waist closure system comprising:(i) at least one first attachment component disposed in said first waist region, said first attachment component being positioned so as to be longitudinally aligned with said elasticized waistband, and(ii) at least one second attachment component disposed in said second waist region, said second attachment component being engageable with said first attachment component so that when the primary closure is formed said second attachment component engages said first attachment component at at least two anchor zones longitudinally aligned with said elasticized waistband so as to dynamically maintain/create lateral tension through at least a portion of said elasticized waistband.

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Referenced By

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