Patent EP0157649A2 successfully refreshed from Google Patents.
EP0157649A2
Expired / Lapsed
EP
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Disposable diaper having density and basis weight profiled absorbent core
Assignee: Procter and Gamble Co
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Filing: 1985-04-04
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Granted: —
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Expires: 2005-04-04
Abstract
Abstract A disposable diaper wherein a central portion of its absorbent core has a higher density and higher basis weight per unit area than longitudinally spaced end portions of the absorbent core. Such absorbent cores may comprise a mixture of hydrophilic fibers and discrete particles of a highly absorbent material such as, for example, hydrogel material.
Inventors
- 👤 Margaret Henderson Hasse
- 👤 Mark John Steinhardt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 11:26
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/534; A61F13/535; A61F13/533; A61F2013/530868; A61F2013/530897; A61F2013/530905; A61F2013/530927; A61F2013/530934; A61F2013/530948; A61F2013/530956; A61F2013/5326; A61F13/537; A61F2013/53795
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
A disposable diaper comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core disposed intermediate said tcpsheet and said backsheet, said absorbent core comprising two longitudinally spaced end portions and a central portion disposed intermediate said end portions, characterised in that said central portion has a greater average density and a greater average basis weight than said end portions, the ratio of the average density of said central portion to the average density of said end portions being at least 2:1.
Claim 2
Dependent Claim
84 words
A disposable diaper comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core disposed intermediate said tcpsheet and said backsheet, said absorbent core comprising two longitudinally spaced end portions and a central portion disposed intermediate said end portions, characterised in that said central portion has a greater average density and a greater average basis weight than said end portions, the ratio of the average density of said central portion to the average density of said end portions being at least 2:1.
Claim 3
Dependent Claim
28 words
A disposable diaper according to claim 1 wherein the ratio of the density of said central portion to the density of said end portions is at least 2.5:1.
Claim 4
Dependent Claim
43 words
A disposable diaper according to either one of claims 1 and 2 wherein said absorbent core comprises a mixture of hydrophilic fibers and discrete particles of a highly absorbent particulate material, said mixture having a fiber-to-particulate weight ratio of from 70:30 to 98:2.
Claim 5
Dependent Claim
27 words
A di sposable diaper according to claim 3 wherein only said central portion of said absorbent core comprises said mixture of hydrophilic fibers and discrete particulate material.
Claim 6
Dependent Claim
25 words
A disposable diaper according to either one of claims 3 and 4 wherein the mixture has a fiber-to-particulate weight ratio of from 75:25 to 90:10.
Claim 7
Dependent Claim
94 words
A disposable diaper according to any one of claims 1-5 wherein at least one of said end portions is the medial region of a waistband assemblage of said core, said waistband assemblage of said core further comprising a laterally speed pair of ear regions, and said ear regions and said medial region being canplementarily configured and disposed to enable said ear regions to be folded atop said medial region so that the lateral dimension of said folded waistband assemblage is equal to or less than the width of said central portion of said core.
Claim 8
Dependent Claim
15 words
A disposable diaper according to claim 6 wherein said waistband assemblage has substantially uniform density.
Claim 9
Dependent Claim
25 words
A disposable diaper according to claim 6 wherein said ear regions are substantially thinner and more dense than said medial region of said waistband assemblage.
Claim 10
Dependent Claim
88 words
A disposable diaper according to any one of the preceding claims having a crotch region comprising said central portion and a pair of laterally spaced leg cuff portions, which leg cuff portions extend laterally outwardly from the lateral side edges of said central portion, said leg cuff portions being of lesser average density and lesser average basis weight than said central portion, said leg cuff portions and said end portions being so configured and disposed that they corporately isolate said central portion from the edges of said core.
Claim 11
Dependent Claim
31 words
A disposable diaper according to any one of the preceding claims wherein said portions are demarcated from each other by sufficiently abrupt thickness differences that said core has a terraced character.
Claim 12
Dependent Claim
23 words
A disposable diaper according to any one of the preceding claims wherein said end portions have substantially greater resilience than said central portion.
Claim 13
Dependent Claim
30 words
A disposable diaper according to any one of claims 3-11 wherein said discrete particulate material and said fibers of said mixture are substantially uniformly dispersed with respect to each other.
Claim 14
Dependent Claim
23 words
A disposable diaper according to any one of claims 3-12 wherein said highly absorbent particulate material comprises hydrogel material that is substantially water-insoluble.
References Cited (Backward Citations)
No citation records indexed.
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