US4079739A
Expired / Lapsed
US
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Die-cut contoured catamenial napkin of multi-layered construction
Assignee: Kimberly Clark Corp
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Filing: 1976-12-27
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Granted: 1978-03-21
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Expires: 1996-12-27
Abstract
Abstract A die-cut, contoured, catamenial napkin of joined-together layers of sheet material assembled into a sandwich which combines a thin, soft, flexible peripheral portion for comfort with a thick central portion for increased fluid-holding capacity. The uppermost layer is a thin batt of intermingled fibers provided with unbonded low density cushion areas separated by spaced bonded areas comprised of compressed fluid-distributing channels of higher density extending generally longitudinally of the batt and intersecting the ends and edges. The central portion of the uppermost layer is upwardly deformed to provide a pad-receiving cavity in which a main fluid-holding element consisting of a relatively thick pad of absorbent material is positioned in intimate physical contact with the uppermost layer while the horizontal face portions of the side and end walls of the central pad are free of contact with neighboring components. The outer peripheral portion of the uppermost layer, and in the preferred embodiment, the lower surface of the fluid-holding element, is adhesively secured to a fluid-impervious bottom layer by a thin discontinuous film of adhesive. Pressure-sensitive adhesive may be used on the bottom of the pad for releasable attachment to a supporting undergarment.
Inventors
- 👤 Howard A. Whitehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:35
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F13/15666; A61F13/15674; A61F13/51; A61F13/511; A61F13/51104; A61F13/51108; A61F13/512; A61F13/5126; A61F13/514; A61F13/53; A61F13/534; A61F13/537; A61F13/539; A61F13/56; A61F13/58; A61F2013/15821; A61F13/45; A61F13/47; A61F2013/4708; A61F2013/51078; A61F2013/530131; A61F2013/530802; A61F2013/53445; A61F13/53708; A61F2013/53721; A61F2013/53908; A61F2013/582
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
315 words
A die-cut catamenial napkin of generally oblong shape consisting of a unified, surface-contoured sandwich of joined-together layers comprising: a. an uppermost body-contacting absorbent layer adapted to receive and distribute discharged body fluids; b. a central layer comprised of a main fluid-holding element of absorbent material; and c. a bottom layer comprised of a flexible material which resists fluid strike-through; said uppermost absorbent layer being comprised of a thin batt of intermingled absorbent fibers, said batt having a fluid-pervious scuff-resistant facing, said batt having impressed therein a plurality of spaced fluid-spreading channels defining compacted areas extending in a generally longitudinal direction for the full length of the batt to intersect the edges and ends of the batt at spaced intervals, said channels being comprised of fibers bonded to each other in the compacted area, the fibers in said batt disposed under said facing and disposed in the spaces between said channels being substantially unbonded to each other; said uppermost layer having a central portion upwardly deformed to define an elongate pad-receiving cavity; said central layer and main fluid-holding element being comprised of a pad of absorbent material, said pad being narrower and shorter than said body-contacting layer, said pad being disposed inside the elongate pad-receiving cavity of said uppermost layer with the upper surface of said pad being in intimate physical contact with but unadhered to the bottom surface of said uppermost layer; said bottom layer having at least one face which is fluid-impervious; the peripheral edges of said uppermost layer and said bottom layer being die-cut and coterminous; and the lower surface of said uppermost layer being joined to the upper surface said bottom layer by means of a discontinuous film of adhesive disposed between said uppermost and bottom layers in the peripheral areas lying outside of the boundaries of said central element where said uppermost and bottom layers are in contact with each other.
Claim 2
Dependent Claim
315 words
A die-cut catamenial napkin of generally oblong shape consisting of a unified, surface-contoured sandwich of joined-together layers comprising: a. an uppermost body-contacting absorbent layer adapted to receive and distribute discharged body fluids; b. a central layer comprised of a main fluid-holding element of absorbent material; and c. a bottom layer comprised of a flexible material which resists fluid strike-through; said uppermost absorbent layer being comprised of a thin batt of intermingled absorbent fibers, said batt having a fluid-pervious scuff-resistant facing, said batt having impressed therein a plurality of spaced fluid-spreading channels defining compacted areas extending in a generally longitudinal direction for the full length of the batt to intersect the edges and ends of the batt at spaced intervals, said channels being comprised of fibers bonded to each other in the compacted area, the fibers in said batt disposed under said facing and disposed in the spaces between said channels being substantially unbonded to each other; said uppermost layer having a central portion upwardly deformed to define an elongate pad-receiving cavity; said central layer and main fluid-holding element being comprised of a pad of absorbent material, said pad being narrower and shorter than said body-contacting layer, said pad being disposed inside the elongate pad-receiving cavity of said uppermost layer with the upper surface of said pad being in intimate physical contact with but unadhered to the bottom surface of said uppermost layer; said bottom layer having at least one face which is fluid-impervious; the peripheral edges of said uppermost layer and said bottom layer being die-cut and coterminous; and the lower surface of said uppermost layer being joined to the upper surface said bottom layer by means of a discontinuous film of adhesive disposed between said uppermost and bottom layers in the peripheral areas lying outside of the boundaries of said central element where said uppermost and bottom layers are in contact with each other.
Claim 3
Dependent Claim
26 words
The napkin of claim 1 wherein the pad of said central layer is also adhesively secured to said bottom layer by a discontinuous film of adhesive.
Claim 4
Dependent Claim
40 words
The napkin of claim 1 wherein a plurality of spaced funnel-shaped apertures are provided in the face of said uppermost layer in the unbonded areas disposed between said fluid-spreading channels and at least in the area overlying said central layer.
Claim 5
Dependent Claim
19 words
The napkin of claim 3 wherein said funnel-shaped apertures are disposed only in the area overlying said central layer.
Claim 6
Dependent Claim
16 words
The napkin of claim 3 wherein said funnel-shaped apertures are in communication with said central layer.
Claim 7
Dependent Claim
27 words
The napkin of claim 1 wherein the fluid-impervious bottom layer has an additional thin batt of absorbent fibers disposed on the top surface of said bottom layer.
Claim 8
Dependent Claim
28 words
The napkin of claim 1 wherein the fluid-impervious bottom layer has a material with a higher coefficient of friction disposed on the bottom surface of said bottom layer.
Claim 9
Dependent Claim
28 words
The napkin of claim 6 wherein the fluid-impervious bottom layer has a material with a higher coefficient of friction disposed on the bottom surface of said bottom layer.
Claim 10
Dependent Claim
46 words
The napkin of claim 1 wherein said uppermost layer and said bottom layer are coterminous at the peripheral edges but wherein said uppermost layer has a shorter longitudinal dimension than said bottom layer to provide said napkin with an arcuately concave configuration in the long direction.
Claim 11
Dependent Claim
46 words
The napkin of claim 6 wherein said uppermost layer and said bottom layer are coterminous at the peripheral edges but wherein said uppermost layer has a shorter longitudinal dimension than said bottom layer to provide said napkin with an arcuately concave configuration in the long direction.
Claim 12
Dependent Claim
46 words
The napkin of claim 7 wherein said uppermost layer and said bottom layer are coterminous at the peripheral edges but wherein said uppermost layer has a shorter longitudinal dimension than said bottom layer to provide said napkin with an arcuately concave configuration in the long direction.
Claim 13
Dependent Claim
46 words
The napkin of claim 8 wherein said uppermost layer and said bottom layer are coterminous at the peripheral edges but wherein said uppermost layer has a shorter longitudinal dimension than said bottom layer to provide said napkin with an arcuately concave configuration in the long direction.
Claim 14
Dependent Claim
29 words
The napkin of claim 1 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 15
Dependent Claim
29 words
The napkin of claim 6 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 16
Dependent Claim
29 words
The napkin of claim 7 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 17
Dependent Claim
29 words
The napkin of claim 8 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 18
Dependent Claim
29 words
The napkin of claim 9 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 19
Dependent Claim
29 words
The napkin of claim 10 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 20
Dependent Claim
29 words
The napkin of claim 11 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
Claim 21
Dependent Claim
29 words
The napkin of claim 12 wherein the lower surface of the bottom layer has pressure sensitive means applied thereto for use in attaching said napkin to a supporting undergarment.
References Cited (Backward Citations)
US1799147A
Cited
US2551663A
Cited
US2662527A
Cited
US3867940A
Cited
US3881490A
Cited
US3927673A
Cited
US3888255A
Cited
US3916900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |