US4710186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clean and dry appearance facing
Assignee: Personal Products Co
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Filing: 1984-07-20
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Granted: 1987-12-01
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Expires: 2004-07-20
Abstract
Abstract A facing is provided for a body fluid absorbent product which facing is not only substantially nonwettable and pervious to body fluid, but which also enhances the clean and dry appearance of the product after it has absorbed body fluids. The facing comprises a polyolefin having an open area of from about 1.3 to about 35 percent of the total area intended for the passage of body fluids and having incorporated therein a sufficient quantity of opacifying agent so as to have the sheet exhibit a brightness of at least 45 percent.
Inventors
- 👤 Edmund Z. DeRossett
- 👤 Thomas J. Luceri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:39
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/51113; A61F13/84; A61F13/8405; A61L; A61L15/00; A61L15/16; A61L15/18; A61L15/22; A61L15/24; A61F2013/51002; A61F2013/51038; A61F2013/51042
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
In a product to be worn for absorbing body fluids and comprising an absorbent core having a body facing side and a garment facing side, the improvement wherein said body facing side has an overlying facing layer comprising a continuous sheet comprising a polyolefin selected from the group consisting of polyethylene, polypropylene or copolymers thereof; said sheet having apertures therethrough for allowing for the passage of body fluids; said sheet comprising from about 5 to about 12% by weight of a opacifying agent; said apertures comprising at least about 15% open area but an amount of open area insufficient to reduce the brightness of the film to less than 45.
Claim 2
Dependent Claim
110 words
In a product to be worn for absorbing body fluids and comprising an absorbent core having a body facing side and a garment facing side, the improvement wherein said body facing side has an overlying facing layer comprising a continuous sheet comprising a polyolefin selected from the group consisting of polyethylene, polypropylene or copolymers thereof; said sheet having apertures therethrough for allowing for the passage of body fluids; said sheet comprising from about 5 to about 12% by weight of a opacifying agent; said apertures comprising at least about 15% open area but an amount of open area insufficient to reduce the brightness of the film to less than 45.
Claim 3
Dependent Claim
28 words
The product of claim 1 wherein the sheet comprises an open area in an amount insufficient to reduce the brightness of the film to less than about 48.
Claim 4
Dependent Claim
15 words
The product of claim 1 wherein the sheet comprises as the opacifying agent titanium dioxide.
Claim 5
Dependent Claim
30 words
The product of claim 1 wherein said sheet is a net-like material comprising land areas connected by rib-like strands, said land areas and said rib-like strands defining therebetween said apertures.
Claim 6
Dependent Claim
9 words
The product of claim 1 as a sanitary napkin.
Claim 7
Dependent Claim
9 words
The product of claim 1 as a disposable diaper.
Claim 8
Dependent Claim
9 words
The product of claim 1 as a wound dressing.
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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |