US3665922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary napkin with improved wrap material
Assignee: Kimberly Clark Corp
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Filing: 1969-11-20
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Granted: 1972-05-30
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Expires: 1989-11-20
Abstract
Abstract A sanitary napkin having a conventional central pad of absorbent material, and an improved wrap material disposed around the central pad and comprising a high-loft, nonwoven fabric having a discontinuous backing layer of flexible adhesive. The fabric includes a multiplicity of hydrophobic fibers individually looped outwardly from the backing layer with the ends of each loop embedded in the backing layer.
Inventors
- 👤 Robert F Skora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:24
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/475; A61F13/4751; A61F13/4755; A61F13/51; A61F13/511; A61F13/513; A61F13/51305; A61F13/53; A61F13/534; A61F13/537; A61F13/15577; A61F2013/15821; A61F2013/51059; A61F2013/51061; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530131; A61F2013/530182; A61F2013/53445; A61F13/53708; A61F2013/53721; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
25 words
A sanitary napkin as set forth in claim 1 wherein the fiber-to-adhesive ratio in said high-loft wrap material is from about 1:1 to about 2.5:1.
Claim 2
Dependent Claim
22 words
A sanitary napkin as set forth in claim 1 wherein said high-loft wrap material weighs from about 15 to about 40 grams/yd.2
Claim 3
Dependent Claim
27 words
A sanitary napkin as set forth in claim 1 wherein the fibers in said high-loft wrap material have a denier of from about 1.5 to about 3.0.
Claim 4
Dependent Claim
26 words
An improved sanitary napkin as set forth in claim 1 wherein said backing layer of said napkin fabric comprises a series of interconnected hexagons of adhesive.
Claim 5
Dependent Claim
35 words
An improved sanitary napkin as set forth in claim 5 wherein the spacing of said points varies regularly for said fibers throughout the fabric so that said loops vary in height regularly throughout the fabric.
Claim 6
Dependent Claim
29 words
An improved sanitary napkin as set forth in claim 1 wherein said fiber loops in said napkin fabric lie in planes extending in the cross direction of the fabric.
Claim 7
Dependent Claim
52 words
An improved sanitary napkin as set forth in claim 1 wherein said napkin fabric comprises a discontinuous, flexible backing of adhesive and a multiplicity of heat-set fibers each embedded at spaced longitudinal points in said backing layer and with the fiber portions between said points being looped outwardly from said backing layer.
Claim 8
Dependent Claim
127 words
In a sanitary napkin having a central pad of absorbent material, an improved elastic wrap disposed around said central pad and extending outwardly beyond the opposite ends thereof for providing fastening tabs, said wrap comprising an elastic high-loft, nonwoven fabric having a discontinuous backing layer of flexible adhesive disposed adjacent said central pad and a multiplicity of heat settable hydrophobic fibers individually looped outwardly from said backing layer and heat set in the looped form with the ends of each loop embedded in said backing layer, said loops extending over the open spaces in said discontinuous backing layer, said open spaces facilitating the passing of fluids through said wrap to said central pad of absorbent matErial, said elastic wrap enabling more uniform contact with said central pad.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |