Patent US4698774A successfully refreshed from Google Patents.
Patent US4069822A successfully refreshed from Google Patents.
US4069822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous fibrous web to a substrate and articles therefrom
Assignee: Procter and Gamble Co
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Filing: 1975-10-30
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Granted: 1978-01-24
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Expires: 1995-10-30
Abstract
Abstract A method of bonding a fluid-porous, fibrous, woven or non-woven web to a substrate and products made thereby. The porous web is overall or pattern coated with an extremely low level of hot-melt adhesive by causing the hot-melt adhesive to be wiped from a controlled thickness hot-melt adhesive source by the individual projecting surface fibers and fiber junctions of the porous web. Hot-melt adhesive globules are formed on the individual projecting surface fibers and fiber junctions which, when the porous web and substrate are passed through a preset clearance nip roll assembly, provide a product wherein the porous web is bonded to the substrate with excellent bond strength, the porous web remaining flexible and completely transparent to fluid transmission.
Inventors
- 👤 Kenneth B. Buell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49007; A61F13/49009; A61F13/15577; A61F13/15585; A61F13/15593; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/1095; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1724; Y10T156/1727; Y10T156/1798; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
An integral disposable diaper comprising a fluid porous, fibrous topsheet, a fluid impermeable backsheet and an absorbent core element therebetween, said topsheet having a surface overlying said core element and portions of said backsheet, said surface of said topsheet being defined by a plurality of individual fibers and fiber junctions, said topsheet being bonded directly to at least one of said core element and said portions of said backsheet by globules of hot-melt adhesive located at some at least of said individual fibers and fiber junctions defining said topsheet surface.
Claim 2
Dependent Claim
90 words
An integral disposable diaper comprising a fluid porous, fibrous topsheet, a fluid impermeable backsheet and an absorbent core element therebetween, said topsheet having a surface overlying said core element and portions of said backsheet, said surface of said topsheet being defined by a plurality of individual fibers and fiber junctions, said topsheet being bonded directly to at least one of said core element and said portions of said backsheet by globules of hot-melt adhesive located at some at least of said individual fibers and fiber junctions defining said topsheet surface.
Claim 3
Dependent Claim
45 words
The structure claimed in claim 1 wherein said topsheet is bonded directly to said core element and said portions of said backsheet by said globules of hot-melt adhesive located at said some at least of said individual fibers and fiber junctions defining said topsheet surface.
Claim 4
Dependent Claim
32 words
The structure claimed in claim 1 wherein said adhesive globules are randomly located at the positions of said surface fibers and fiber junctions over all of said surface of said porous topsheet.
Claim 5
Dependent Claim
33 words
The structure claimed in claim 1 wherein said adhesive globules are randomly located at the positions of said surface fibers and fiber junctions within a pattern on said surface of said porous topsheet.
Claim 6
Dependent Claim
73 words
A laminate comprising a fluid-porous, fibrous layer and a substrate layer, said porous layer having a surface abutting said substrate layer, said surface of said porous layer being defined by a plurality of individual fibers and fiber junctions, said porous layer and said substrate layer being bonded directly together by globules of hot-melt adhesive located at some at least of said individual fibers and fiber junctions of said surface of said porous layer.
Claim 7
Dependent Claim
73 words
A laminate comprising a fluid-porous, fibrous layer and a substrate layer, said porous layer having a surface abutting said substrate layer, said surface of said porous layer being defined by a plurality of individual fibers and fiber junctions, said porous layer and said substrate layer being bonded directly together by globules of hot-melt adhesive located at some at least of said individual fibers and fiber junctions of said surface of said porous layer.
Claim 8
Dependent Claim
32 words
The structure claimed in claim 5 wherein said adhesive globules are randomly located at the position of said surface fibers and fiber junctions over all of said surface of said porous layer.
Claim 9
Dependent Claim
33 words
The structure claimed in claim 5 wherein said adhesive globules are randomly located at the positions of said surface fibers and fiber junctions within a pattern on said surface of said porous layer.
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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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |