CA1038554A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Absorptive structure having improved surface dryness and improved resistance to rewetting in-use
Assignee: Procter and Gamble Co
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Filing: 1977-02-15
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Granted: 1978-09-19
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Expires: 1997-02-15
Abstract
Abstract ABSORPTIVE STRUCTURE HAVING IMPROVED SURFACE DRYNESS AND IMPROVED RESISTANCE TO REWETTING IN-USE Lawrence H. Sanford A B S T R A C T Absorptive devices, such as disposable diapers, presenting a dry surface feel to the user. In a partic-ularly preferred embodiment of the present invention, a substantially planar, moisture absorbent layer is disposed between a soft and bulky, wearer contacting, moisture-pervious topsheet and a moisture-resistant back-ing sheet to form a disposable diaper. The topsheet prefer-ably comprises an integral structure containing a multiplicity of depressed areas which intimately contact the uppermost surface of a substantially planar, moisture absorbent layer, while the non-depressed areas of the topsheet contact the wearer's skin in-use. Due to the wet resilience and increased overall caliper of the topsheet, the non-depressed areas, which are of substantially the same density as the depressed areas, tend to isolate the wearer's skin from moisture contained within the moisture absorbent layer, thereby providing improved surface dryness and improved resistance to rewetting when the structure is temporarily subjected to pressure resulting from the wearer's body movements.
Inventors
- 👤 Lawrence H. Sanford
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-07 13:41
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/51104; A61F13/513; A61F13/51305; A61F13/45; A61F13/49; A61F13/495; A61F2013/4958; A61F2013/51078
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
In a disposable diaper having a substantially planar, moisture absorbent layer disposed between a soft and bulky, wearer-contacting, topsheet which is uniformly moisture-pervious alongs its entire surface and a moisture-resistant backing sheet, the improvement wherein said uniformly moisture-pervious topsheet comprises a wet resilient integral structure containing a multiplicity of depressed areas which intimately contact the uppermost surface of said substantially planar, moisture absorbent layer in-use, the non-depressed areas of said topsheet contacting the wearer's skin in-use, said depressed and said non-depressed areas being of substantially uniform density throughout, said non-depressed areas tending to isolate the wearer's skin from moisture contained within said moisture-absorbent layer in-use, thereby providing improved surface dryness and improved resistance to rewetting.
Claim 2
Dependent Claim
115 words
In a disposable diaper having a substantially planar, moisture absorbent layer disposed between a soft and bulky, wearer-contacting, topsheet which is uniformly moisture-pervious alongs its entire surface and a moisture-resistant backing sheet, the improvement wherein said uniformly moisture-pervious topsheet comprises a wet resilient integral structure containing a multiplicity of depressed areas which intimately contact the uppermost surface of said substantially planar, moisture absorbent layer in-use, the non-depressed areas of said topsheet contacting the wearer's skin in-use, said depressed and said non-depressed areas being of substantially uniform density throughout, said non-depressed areas tending to isolate the wearer's skin from moisture contained within said moisture-absorbent layer in-use, thereby providing improved surface dryness and improved resistance to rewetting.
Claim 3
Dependent Claim
18 words
2, The disposable diaper of Claim 1 wherein said depressed areas in said topsheet are comprised of embossments.
Claim 4
Dependent Claim
36 words
The disposable diaper of Claim 1, wherein said depressed areas comprise between about 10 percent and about 50 percent of the total surface area of said topsheet, as measured in the plane of said depressed areas.
Claim 5
Dependent Claim
31 words
The disposable diaper of Claim 3 wherein said topsheet is comprised of a generally hydrophobic, non-woven material and said depressed areas are provided substantially throughout the entire surface of said topsheet.
Claim 6
Dependent Claim
28 words
The disposable diaper of Claim 4, wherein said depressed areas are provided at least in those areas of said diaper which receive moisture discharged from the wearer's body.
Claim 7
Dependent Claim
16 words
The disposable diaper of Claim 1, wherein said substantially planar, moisture absorbent layer is generally hydrophilic.
Claim 8
Dependent Claim
32 words
The disposable diaper of Claim 6, wherein said substantially planar, moisture absorbent layer is comprised of a layer of fluffed cellulose wadding encapsulated on both surfaces by a layer of tissue paper.
Claim 9
Dependent Claim
19 words
The disposable diaper of Claim 6, wherein said substantially planar, moisture absorbent layer is comprised of creped cellulose wadding.
Claim 10
Dependent Claim
122 words
In a body fluid absorbent structure comprising a substantially planar, generally hydrophilic moisture absorbent layer and a generally hydrophobic, soft and bulky, wearer-contacting, topsheet which is uniformly moisture-pervious along its entire surface positioned in superposed relation thereto in-use, the improvement wherein said uniformly moisture-pervious topsheet comprises a wet resilient, integral structure containing a multiplicity of depressed areas which intimately contact the uppermost surface of said substantially planar, moisture absorbent layer in-use, the non-depressed areas of said topsheet contacting the wearer's skin in-use, said depressed and said non-depressed areas being of substantially uniform density throughout, said non-depressed areas tending to isolate the wearer's skin from moisture contained within said moisture absorbent layer in-use, thereby providing improved surface dryness and improved resistance to rewetting.
Claim 11
Dependent Claim
122 words
In a body fluid absorbent structure comprising a substantially planar, generally hydrophilic moisture absorbent layer and a generally hydrophobic, soft and bulky, wearer-contacting, topsheet which is uniformly moisture-pervious along its entire surface positioned in superposed relation thereto in-use, the improvement wherein said uniformly moisture-pervious topsheet comprises a wet resilient, integral structure containing a multiplicity of depressed areas which intimately contact the uppermost surface of said substantially planar, moisture absorbent layer in-use, the non-depressed areas of said topsheet contacting the wearer's skin in-use, said depressed and said non-depressed areas being of substantially uniform density throughout, said non-depressed areas tending to isolate the wearer's skin from moisture contained within said moisture absorbent layer in-use, thereby providing improved surface dryness and improved resistance to rewetting.
Claim 12
Dependent Claim
19 words
The body fluid absorbent structure of Claim 9, wherein said moisture-pervious topsheet compresses a disposable liner for a diaper.
Claim 13
Dependent Claim
19 words
The body fluid absorbent structure of Claim 9 wherein said topsheet is comprised of a generally hydro-phobic, non-woven material.
Claim 14
Dependent Claim
30 words
The body fluid absorbent structure of Claim 9, wherein said depressed areas are provided at least in those areas of said structure which receive moisture discharged from the wearer's body.
References Cited (Backward Citations)
No citation records indexed.
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