Patent EP0137644A2 successfully refreshed from Google Patents.
EP0137644A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Corrugated web structure
Assignee: Personal Products Co
•
Filing: 1984-08-14
•
Granted: —
•
Expires: 2004-08-14
Abstract
Abstract An absorbent product comprising a corrugated fibrous and superabsorbent in an amount of at least 10 percent by weight associated with the web. The corrugated web is stabilized to retain its transverse folds when wet.
Inventors
- 👤 Dennis C. Holtman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 21:49
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/53409; A61F13/53436; A61F13/537; A61F13/45; A61F13/49; A61F13/49007; A61F13/49009; A61F2013/49068; A61F2013/49076; A61F2013/530131; A61F2013/530481; A61F2013/53445; A61F13/53708; A61F2013/53721; A61F2013/53765; A61F2013/53786
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
31 words
An absorbent product comprising a corrugated fibrous web containing at least 10% by weight of said web of superabsorbent, said corrugated web being stabilised to retain its transverse folds when wet.
Claim 2
Dependent Claim
31 words
An absorbent product comprising a corrugated fibrous web containing at least 10% by weight of said web of superabsorbent, said corrugated web being stabilised to retain its transverse folds when wet.
Claim 3
Dependent Claim
23 words
The absorbent product of claim 1, wherein the superabsorbent is present in an amount between 10 and 150% by weight of said web.
Claim 4
Dependent Claim
23 words
The absorbent product of claim 2, wherein the superabsorbent is present in an amount between 50 and 90% by weight of said web.
Claim 5
Dependent Claim
24 words
The absorbent product of any one of claims 1 to 3, wherein the superabsorbent is substantially affixed to the fibers of the fibrous web.
Claim 6
Dependent Claim
23 words
The absorbent product of any one of claims 1 to 3, wherein the superabsorbent is placed in the folds provided by said corrugation.
Claim 7
Dependent Claim
25 words
The absorbent product of any one of claims 1 to 5 including a second layer which has a higher capillary pressure then the fibrous web.
Claim 8
Dependent Claim
42 words
The absorbent product of claim 6, wherein the second layer is discrete from but united to said fibrous web and substantially co-extensive therewith, the second layer being denser than said fibrous web to provide preferential wicking of liquid in said second layer.
Claim 9
Dependent Claim
23 words
The absorbent product of claim 6 or claim 7, wherein the superabsorbent is between the corrugations and. in contact with said second layer.
Claim 10
Dependent Claim
21 words
The absorbent product of claim 6 or claim 7, wherein the superabsorbent is between said fibrous web and said second layer.
Claim 11
Dependent Claim
67 words
An absorbent product comprising a first fibrous web layer and a second layer discrete from but united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being transversely folded to provide a corrugated structure, said corrugated web being stabilised to retain its transverse folds when wet.
Claim 12
Dependent Claim
67 words
An absorbent product comprising a first fibrous web layer and a second layer discrete from but united to said first layer, said second layer having a higher capillary pressure than said first layer to provide preferential attraction and wicking of liquid in said second layer, said layers being transversely folded to provide a corrugated structure, said corrugated web being stabilised to retain its transverse folds when wet.
Claim 13
Dependent Claim
39 words
The absorbent product of any one of claims 1 to 10 wherein the fibrous web prior to corrugation has a dry bulk of at least 10 cc per gram and a weight less than 4 ounces per square yard.
Claim 14
Dependent Claim
24 words
The absorbent product of any one of claims 1 to 11, wherein the fibrous web has a dry bulk recovery of at least 30%.
Claim 15
Dependent Claim
19 words
The absorbent product of any one of claims 1 to 12, wherein the web is a nonwoven fibrous web.
Claim 16
Dependent Claim
21 words
The absorbent product of any one of claims 1 to 13 wherein the fibers of the web are synthetic resilient fibres.
Claim 17
Dependent Claim
23 words
The absorbent product of claim 14, wherein the fibres of the web are polyethylene, polyester, polypropylene or polyamide fibres or a mixture thereof.
Claim 18
Dependent Claim
20 words
The absorbent product of any one of claims 1 to 14, wherein the fibres of the web are bicomponent fibers.
Claim 19
Dependent Claim
34 words
The absorbent structure of claim 6 or claim 10 or any claim dependent thereon, wherein the second layer is chemically delignified wood pulp fibers, peat moss, acrylic fibers, rayon fibers or a mixture thereof.,
Claim 20
Dependent Claim
27 words
The absorbent product of claim 17, wherein the web is a layer of non-woven polyester fibres and the second layer is of chemically delignified wood pulp fibres.
Claim 21
Dependent Claim
22 words
The absorbent product of any one of claims 1 to 18, wherein said corrugated structure is stabilised by use of an adhesive.
Claim 22
Dependent Claim
28 words
The absorbent product of any one of claims 1 to 18, wherein said corrugated structure is stabilised by use of low melt fibres distributed in said fibrous web.
Claim 23
Dependent Claim
38 words
The absorbent product of any one of claims 1 to 20, further comprising a liquid impermeable barrier covering at least one side of said web and a liquid-permeable facing covering at least the other side of said web.
Claim 24
Dependent Claim
29 words
The absorbent product of claim 21 when dependent on any one of claims 1 to 8, wherein the superabsorbent is placed between the corrugated web and the liquid-impermeable barrier.
Claim 25
Dependent Claim
25 words
The absorbent product of claim 21 when dependent on any one of claims 1 to 8, wherein the superabsorbent is affixed to said liquid-impermeable barrier.
Claim 26
Dependent Claim
25 words
The absorbent product of any one of claims 21 to 23 in the form of a disposable diaper, a urinary pad or a sanitary napkin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.