EP0252650A2
Expired / Lapsed
EP
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Twisted, stiffened cellulosic fibres, and absorbent structures made therefrom
Assignee: Procter and Gamble Co
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Filing: 1987-06-24
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Granted: —
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Expires: 2007-06-24
Abstract
Abstract Individualized, stiffened, twisted cellulosic fibers and absorbent structures made from such fibers. The fibers have an average dry fiber twist count of at least about 4.5 twist nodes per millimeter, an average wet fiber twist count of at least about 0.5 twist nodes per millimeter less than the dry fiber twist count, and a water retention value of between about 28% and about 50%. Preferably the fibers have an average wet fiber twist count of at least about 3.0 twist nodes per millimeter and an isopropyl alcohol retention value of less than about 30%.
Inventors
- 👤 Danny Raymond Moore
- 👤 James William Owens
- 👤 Howard Leon Schoggen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:10
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/02; D06; D06M; D06M13/00; D06M13/10; D06M13/12; A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
67 words
Cellulosic fibrous material comprising individualized, stiffened, curled cellulosic fibers, characterized in that said fibers have: a ) an average dry fiber twist count of at least 4.5 twist nodes per millimeter; b ) an average wet fiber twist count of at least 0.5 twist nodes per millimeter less than said dry fiber twist count; and c ) an average water retention value of between 28% and 50%.
Claim 2
Dependent Claim
67 words
Cellulosic fibrous material comprising individualized, stiffened, curled cellulosic fibers, characterized in that said fibers have: a ) an average dry fiber twist count of at least 4.5 twist nodes per millimeter; b ) an average wet fiber twist count of at least 0.5 twist nodes per millimeter less than said dry fiber twist count; and c ) an average water retention value of between 28% and 50%.
Claim 3
Dependent Claim
39 words
Cellulosic fibrous material according to claim 1 further characterized in that said fibers have an average wet fiber twist count of at least 3.0 twist nodes per millimeter and an average isopropyl alcohol retention value of less than 30%.
Claim 4
Dependent Claim
28 words
Cellulosic fibrous material according to either one of claims 1 and 2 characterized in that said fibers have an average water retention value of between 35% and 42%.
Claim 5
Dependent Claim
29 words
Cellulosic fibrous material according to either one of claim 2 or claim 3 when dependent thereon characterized in that said average isopropyl alcohol retention value is less than 27%.
Claim 6
Dependent Claim
65 words
Cellulosic fibrous material according to any one of claims 1-4 characterized in that said average dry fiber curl factor is at least 0.50, said average dry twist count is at least 6 twist nodes per millimeter, and said average wet twist count is at least 5 twist nodes per millimeter and is at least 1 twist node per millimeter less than average wet twist count.
Claim 7
Dependent Claim
22 words
Cellulosic fibrous material according to any one of claims 1-5 characterized in that the material incorporates glutaraldehyde as an intrafiber crosslinking agent.
Claim 8
Dependent Claim
19 words
An absorbent structure incorporating a mass of individualized, stiffened, curled cellulosic fibers according to any one of claims 1-6.
Claim 9
Dependent Claim
39 words
An absorbent structure according to claim 7 characterized in that said structure has a dry density and an equilibrium wet density, both calculated on a dry fiber weight basis, said dry density being greater than said equilibrium wet density.
Claim 10
Dependent Claim
34 words
An absorbent structure according to either one of claims 7 and 8 characterized in that said structure further comprises polymeric gel forming material in admixture with at least a portion of said absorbent structure.
Claim 11
Dependent Claim
31 words
An absorbent structure according to either one of claims 7 and 8 characterized in that said structure further comprises polymeric gel forming material disposed adjacent a surface of said absorbent structure.
Claim 12
Dependent Claim
44 words
A disposable absorbent article having a liquid impervious backsheet, liquid permeable topsheet connected to said backsheet, and an absorbent core disposed between said backsheet and said topsheet, characterized in that said absorbent core comprises an absorbent structure according to any one of claims 7-10.
References Cited (Backward Citations)
No citation records indexed.
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