US4576596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient shape-retaining sanitary napkin
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1983-03-03
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Granted: 1986-03-18
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Expires: 2003-03-03
Abstract
Abstract A sanitary napkin having an absorbent batt containing a thermoplastic material is provided. The absorbent batt is folded on itself at least on each longitudinal axis with the fold being maintained by fusing areas of the adjacent layers over the batt near the folded edge. Also contemplated are multiple layers of absorbent formed by folding with the folds being maintained by additional fused areas.
Inventors
- 👤 David M. Jackson
- 👤 Billie J. Matthews
- 👤 S. Richard Bornslaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:55
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/53409; A61F13/53418; A61F13/45; A61F13/47; A61F13/4704; A61F13/472; A61F13/47236; A61F13/537; A61F13/5376; A61F13/539; A61F2013/530131; A61F2013/530226; A61F2013/530233; A61F2013/530437; A61F2013/53765; A61F2013/5395
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A sanitary napkin comprising: a generally planar absorbent batt containing a fusible thermoplastic component, said batt being folded upon itself a first time along a first pair of generally parallel longitudinally extending fold lines to form a first and a second layer for said napkin, and folded upon itself a second time along a second pair of generally parallel longitudinally extending fold lines to form a third layer for said napkin, said first and second layers being fixed together adjacent each of said first pair of fold lines by fusing said first and second layers along longitudinally extending fuse lines.
Claim 2
Dependent Claim
100 words
A sanitary napkin comprising: a generally planar absorbent batt containing a fusible thermoplastic component, said batt being folded upon itself a first time along a first pair of generally parallel longitudinally extending fold lines to form a first and a second layer for said napkin, and folded upon itself a second time along a second pair of generally parallel longitudinally extending fold lines to form a third layer for said napkin, said first and second layers being fixed together adjacent each of said first pair of fold lines by fusing said first and second layers along longitudinally extending fuse lines.
Claim 3
Dependent Claim
94 words
The sanitary napkin of claim 1 wherein said absorbent batt has a longitudinal center line and a pair of longitudinal side edges, each of said first pair of fold lines being spaced a sufficiently small distance from a respective side edge to form a G-shaped axial cross-section to said batt on either side of said center line when said batt is folded upon itself said second time, said napkin thereby having only three layers, said first pair of fold lines and associated fuse lines being located internally of said sanitary napkin through such folding.
Claim 4
Dependent Claim
50 words
The sanitary napkin of claim 7 wherein said absorbent batt when folded upon itself a second time forms said third layer and a fourth layer, and further including a longitudinally extending fuse line adjacent each of said second pair of fold lines to fix said third and fourth layers together.
Claim 5
Dependent Claim
63 words
The sanitary napkin of claim 3 wherein said first and second layers are co-terminous along said first pair of fold lines and form a double thickness top layer for said napkin, and said third and fourth layers are co-terminious along said second pair of fold lines and form a double thickness bottom layer for said napkin which is wider than said top layer.
Claim 6
Dependent Claim
29 words
The sanitary napkin of claim 2 or 4 further including an insert of material having a higher absorbency than said batt which is located between two of said layers.
Claim 7
Dependent Claim
134 words
A sanitary napkin comprising: a generally planar absorbent batt containing a fusible thermoplastic component, said batt having a pair of longitudinal side edges and being folded upon itself along a pair of generally parallel longitudinally extending fold lines to form a first and a second layer for said napkin with said side edges generally meeting in the middle of said napkin, two inserts of material having a higher absorbency than said batt carried within said batt, each insert being located adjacent and extending along a respective side edge of said batt such that said inserts are generally centered on said folded batt on either side of a midline to said napkin, and a pair of longitudinally extending fuse lines associated with each insert, with a respective insert located between its pair of fuse lines.
Claim 8
Dependent Claim
134 words
A sanitary napkin comprising: a generally planar absorbent batt containing a fusible thermoplastic component, said batt having a pair of longitudinal side edges and being folded upon itself along a pair of generally parallel longitudinally extending fold lines to form a first and a second layer for said napkin with said side edges generally meeting in the middle of said napkin, two inserts of material having a higher absorbency than said batt carried within said batt, each insert being located adjacent and extending along a respective side edge of said batt such that said inserts are generally centered on said folded batt on either side of a midline to said napkin, and a pair of longitudinally extending fuse lines associated with each insert, with a respective insert located between its pair of fuse lines.
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) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |