Patent US4376440A successfully refreshed from Google Patents.
US4376440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary napkin with adhesive attachment means
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1980-08-05
•
Granted: 1983-03-15
•
Expires: 2000-08-05
Abstract
Abstract A sanitary napkin having a pressure sensitive adhesive applied on the underside of a moisture impervious baffle for attachment to undergarments is provided. The adhesive is geometrically shielded without the presence of a release liner.
Inventors
- 👤 Howard A. Whitehead
- 👤 Robert J. Roeder
- 👤 Herbert E. Grube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:51
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/5605; A61F13/5611
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
61 words
A sanitary napkin including an absorbent matrix and a fluid impervious baffle having an irregularly contoured undergarment facing surface including recessed areas, said recessed areas containing pressure sensitive adhesive with an outward surface having substantial resistance to aging, and said adhesive surface exposed only when the napkin is flexed, said napkin manufactured without a separate disposable component for shielding said adhesive.
Claim 2
Dependent Claim
61 words
A sanitary napkin including an absorbent matrix and a fluid impervious baffle having an irregularly contoured undergarment facing surface including recessed areas, said recessed areas containing pressure sensitive adhesive with an outward surface having substantial resistance to aging, and said adhesive surface exposed only when the napkin is flexed, said napkin manufactured without a separate disposable component for shielding said adhesive.
Claim 3
Dependent Claim
24 words
The napkin according to claim 1 wherein the undergarment facing surface permits moisture removal from the adhesive-containing areas and the adhesive is water containing.
Claim 4
Dependent Claim
15 words
The napkin according to claim 2 in which the adhesive is a water emulsion type.
Claim 5
Dependent Claim
16 words
The napkin according to claims 2 or 3 wherein the adhesive is an acrylic water-based dispersion.
Claim 6
Dependent Claim
23 words
The napkin according to claims 2 or 3 wherein the adhesive is a copolymer of vinyl acetate and 2-ethylhexyl acrylate in aqueous dispersion.
Claim 7
Dependent Claim
26 words
The napkin according to claim 1 wherein the undergarment facing surface is essentially nonabsorbent and nonmoisture conducting and the polymer is of the reactive adhesive polymer.
Claim 8
Dependent Claim
17 words
The napkin according to claim 6 in which the adhesive comprises acrylic monomers and the acrylic oligomers.
Claim 9
Dependent Claim
20 words
The napkin according to claim 6 wherein the adhesive is cured by ultraviolet radiation and contains an ultraviolet sensitive compound.
Claim 10
Dependent Claim
15 words
The napkin according to claim 8 wherein the ultraviolet sensitive compound is a benzoin ether.
Claim 11
Dependent Claim
16 words
The napkin according to claim 6 wherein the adhesive contains at least one cross linking agent.
Claim 12
Dependent Claim
17 words
The napkin according to claims 6, 7 or 10 in which the adhesive contains a multifunctional acrylate.
Claim 13
Dependent Claim
22 words
The napkin according to claims 1, 2, 3 or 6 wherein the baffle has a foam as the irregularly contoured adhesive surface.
Claim 14
Dependent Claim
26 words
The napkin according to claims 1, 2, 3 or 6 wherein the napkin has a densely packed mat of fiber as the irregularly contoured adhesive surface.
References Cited (Backward Citations)
US2295016A
Cited
US3670731A
Cited
US3881490A
Cited
US3890974A
Cited
US3913580A
Cited
US4117184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |