US4216772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent article
Assignee: Kao Corp
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Filing: 1978-09-15
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Granted: 1980-08-12
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Expires: 1998-09-15
Abstract
Abstract A disposable absorbent article in which the surface material is a non-woven fabric comprising from 60 to 90 wt. % of hydrophilic fibers and the balance, i.e., from 40 to 10 wt. %, of the fabric is hydrophobic fibers, and wherein the hydrophilic fibers used therein comprise two kinds of fibers of different thicknesses, i.e., from 10 to 90 wt. % of hydrophilic fibers having a thickness of from 1.5 to 3 denier and the balance of from 90 to 10 wt. % of hydrophilic fibers having a thickness of from 4 to 7 denier.
Inventors
- 👤 Yoshimi Tsuchiya
- 👤 Hiroshi Mizutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/51121; A61F13/513; A61F13/51305; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/4382; D04H1/43835; A61F2013/51002; A61F2013/51038; A61F2013/51042; A61F2013/51052
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
In an absorbent article for absorbing body fluids and exudations comprising an absorbent core which is partially or completely enveloped by a surface cover layer, wherein said surface cover layer is a non-woven fabric having a weight of about 15 to 30 g/m 2 and is made of a fibrous composition consisting essentially of about 60 to 90 wt. % of hydrophilic fibers and about 40 to 10 wt. % of hydrophilic fibers, the improvement which comprises: said hydrophilic fibers consist essentially of from about 10 to 90 wt. % of hydrophilic fibers having a thickness of about 1.5 to 3 denier and from about 90 to 10 wt. % of hydrophilic fibers having a thickness of about 4 to 7 denier.
Claim 2
Dependent Claim
122 words
In an absorbent article for absorbing body fluids and exudations comprising an absorbent core which is partially or completely enveloped by a surface cover layer, wherein said surface cover layer is a non-woven fabric having a weight of about 15 to 30 g/m 2 and is made of a fibrous composition consisting essentially of about 60 to 90 wt. % of hydrophilic fibers and about 40 to 10 wt. % of hydrophilic fibers, the improvement which comprises: said hydrophilic fibers consist essentially of from about 10 to 90 wt. % of hydrophilic fibers having a thickness of about 1.5 to 3 denier and from about 90 to 10 wt. % of hydrophilic fibers having a thickness of about 4 to 7 denier.
Claim 3
Dependent Claim
38 words
An absorbent article according to claim 1 wherein one side of said core has a fluid impervious barrier sheet in association therewith to prevent passage of body fluids and exudates outwardly from one side of said absorbent article.
Claim 4
Dependent Claim
14 words
An absorbent article as claimed in claim 1 which is a disposable sanitary napkin.
Claim 5
Dependent Claim
13 words
An absorbent article as claimed in claim 1 which is a disposable diaper.
Claim 6
Dependent Claim
15 words
An absorbent article according to claim 1 in which said absorbent core comprises cellulosic fibers.
Claim 7
Dependent Claim
50 words
An absorbent article according to claim 1 in which said hydrophilic fibers are selected from the group consisting of cotton fibers, viscose rayon fibers, vinylon fibers and mixtures thereof, and said hydrophobic fibers are selected from the group consisting of polyester fibers, polyolefin fibers, polyolefin conjugate fibers and mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |