Absorbent article with structural elastic-like film web waist belt
First Claim
1. A disposable absorbent article comprising:
- a chassis assembly having lateral edges and leg edges, said chassis assembly comprising a topsheet, a backsheet joined with said topsheet, and an absorbent core positioned between said topsheet and said backsheet, said absorbent core having side edges and waist edges; and
an extensible waist belt joined to said chassis assembly adjacent one of said lateral edges, said waist belt having a central waist panel and a side panel disposed on each side of said central waist panel, each said side panel extending laterally outwardly beyond one of said leg edges, said waist belt consisting of a structural elastic-like film web without the use of an elastic member, said web comprising a strainable network having a first region and a second region formed of substantially the same material composition, said first region providing a first, elastic-like resistive force to an applied axial elongation, and said second region providing a second distinctive resistive force to further applied axial elongation, thereby providing at least two stages of resistive forces in use.
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Accused Products
Abstract
Absorbent articles such as disposable diapers, incontinent briefs, diaper holders, training pants, feminine hygiene garments and the like, that have a unique waist feature that improves the dynamic fit as well as the containment characteristics of the absorbent article. Such absorbent articles comprise a chassis assembly preferably comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet; an extensible waist belt; and a closure system for maintaining the absorbent article on the wearer. The extensible waist belt provides an extensible feature that provides a more comfortable and contouring fit by initially conformably fitting the diaper to the wearer and by sustaining this fit. While each extensible waist belt may be constructed from a number of extensible materials, the extensible waist belt preferably comprises a structural elastic-like film web. The structural elastic-like film (SELF) web exhibits an elastic-like behavior in the direction of elongation without the use of added elastic materials.
255 Citations
20 Claims
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1. A disposable absorbent article comprising:
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a chassis assembly having lateral edges and leg edges, said chassis assembly comprising a topsheet, a backsheet joined with said topsheet, and an absorbent core positioned between said topsheet and said backsheet, said absorbent core having side edges and waist edges; and an extensible waist belt joined to said chassis assembly adjacent one of said lateral edges, said waist belt having a central waist panel and a side panel disposed on each side of said central waist panel, each said side panel extending laterally outwardly beyond one of said leg edges, said waist belt consisting of a structural elastic-like film web without the use of an elastic member, said web comprising a strainable network having a first region and a second region formed of substantially the same material composition, said first region providing a first, elastic-like resistive force to an applied axial elongation, and said second region providing a second distinctive resistive force to further applied axial elongation, thereby providing at least two stages of resistive forces in use. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A disposable absorbent article comprising:
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a chassis assembly having lateral edges and leg edges, said chassis assembly comprising a liquid pervious topsheet, a liquid impervious backsheet joined with said topsheet, and an absorbent core positioned between said topsheet and said backsheet, said absorbent core having side edges and waist edges; and an extensible waist belt joined to said chassis assembly adjacent one of said lateral edges, said waist belt having a central waist panel and a side panel disposed on each side of said central waist panel, each said side panel extending laterally outwardly beyond one of said leg edges, said waist belt consisting of a structural elastic-like film web without the use an elastic member, said web comprising a strainable network, said strainable network including at least the first region and a second region comprised of substantially the same material composition, said first region undergoing a substantially molecular-level deformation and said second region initially undergoing a substantially geometric deformation when said web material is subjected to an applied axial elongation whereby said first region provides a first, elastic-like resistive force to an applied axial elongation, and said second region provides a second distinctive resistive force to further applied axial elongation, thereby providing at least two stages of resistive forces in use. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification