US4307141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-ply fibrous sheet structure
Assignee: Georgia Pacific Consumer Products LP
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Filing: 1980-08-04
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Granted: 1981-12-22
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Expires: 2000-08-04
Abstract
Abstract An absorbent, puffy sheet structure comprising a pair of plies of web material adhered in continuous linear regions interspersed with pocket portions. Portions of the plies forming the pocket portions include inwardly presented perforate bosses that enhance softness and water absorbency. The structure is achieved utilizing apparatus comprising a pair of matched-pattern, synchronously rotatable steel rolls each provided with small, sharp, ply-perforating members in the recesses between land areas, in combination with synchronous rotatable rubber embossing rolls urged against the rotatable steel rolls and intervening plies to form the perforate bosses.
Inventors
- 👤 Lawrence A. Walbrun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:12
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B31; B31F; B31F1/00; B31F1/07; B31F5/00; B31F5/04; B32B3/00; B32B3/10; B32B3/12; B32B3/26; B32B3/266; B31F2201/00; B31F2201/07; B31F2201/0707; B31F2201/0715; B31F2201/0723; B31F2201/0728; B31F2201/0733; B31F2201/0738; B31F2201/0758; B31F2201/0761; B31F2201/0766; B31F2201/0784; B31F2201/0787; B31F2201/0797; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1052; Y10T156/1056; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24322; Y10T428/24355; Y10T428/24446; Y10T428/24455; Y10T428/24463; Y10T428/24479; Y10T428/24562; Y10T428/24628; Y10T428/24661; Y10T428/24802; Y10T428/24934
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
Multi-ply fibrous sheet structure comprising: a pair of plies of fibrous web material adherent to one another in substantially continuous linear regions and defining outwardly presented pocket portions in non-adherent regions thereof; and, solely in each of said non-adherent regions of said plies defining the pocket portions, means forming perforations having fibers disposed thereabout projecting solely inwardly of and terminating within the regions enclosed by the pocket portions, said fibers confronting the inwardly projecting fibers of the opposite one of said plies.
Claim 2
Dependent Claim
82 words
Multi-ply fibrous sheet structure comprising: a pair of plies of fibrous web material adherent to one another in substantially continuous linear regions and defining outwardly presented pocket portions in non-adherent regions thereof; and, solely in each of said non-adherent regions of said plies defining the pocket portions, means forming perforations having fibers disposed thereabout projecting solely inwardly of and terminating within the regions enclosed by the pocket portions, said fibers confronting the inwardly projecting fibers of the opposite one of said plies.
Claim 3
Dependent Claim
18 words
Sheet structure according to claim 1, and characterized in that said linear regions are of generally quadrilateral configuration.
Claim 4
Dependent Claim
27 words
Sheet structure according to claim 1, and characterized in that said means forming said perforations comprise relatively fine, inwardly presented embossments on which said fibers are disposed.
Claim 5
Dependent Claim
23 words
Sheet structure according to claim 1, 2, or 3, and characterized in that said fibrous web material comprises creped coarse fiber paper stock.
Claim 6
Dependent Claim
63 words
Multi-ply fibrous sheet structure comprising: a pair of plies of fibrous material having a plurality of mutually confronting outwardly presented embossments defining pocket portions; and a plurality of relatively fine, perforated pin embossments solely in each of the recited pocket portion-defining plies, said pin embossments being presented solely inwardly of and terminating within regions enclosed by said pocket portions, in mutually confronting relationship.
Claim 7
Dependent Claim
63 words
Multi-ply fibrous sheet structure comprising: a pair of plies of fibrous material having a plurality of mutually confronting outwardly presented embossments defining pocket portions; and a plurality of relatively fine, perforated pin embossments solely in each of the recited pocket portion-defining plies, said pin embossments being presented solely inwardly of and terminating within regions enclosed by said pocket portions, in mutually confronting relationship.
Claim 8
Dependent Claim
25 words
Sheet structure according to claim 5, and characterized in that each said ply of fibrous material comprises a web of creped coarse fiber paper stock.
Claim 9
Dependent Claim
69 words
In multi-ply fibrous sheet structure of the type including a pair of plies of fibrous material having a plurality of outwardly presented embossments defining pocket portions, the combination therewith of a plurality of relatively fine, perforated pin embossments provided solely in each of the recited pocket portion-defining plies, said pin embossments being presented solely inwardly of and terminating within regions enclosed by said pocket portions, in mutually confronting relationship.
Claim 10
Dependent Claim
69 words
In multi-ply fibrous sheet structure of the type including a pair of plies of fibrous material having a plurality of outwardly presented embossments defining pocket portions, the combination therewith of a plurality of relatively fine, perforated pin embossments provided solely in each of the recited pocket portion-defining plies, said pin embossments being presented solely inwardly of and terminating within regions enclosed by said pocket portions, in mutually confronting relationship.
Claim 11
Dependent Claim
84 words
In multi-ply fibrous sheet structure of the type including a pair of plies of fibrous material adhered to one another at inwardly presented land regions provided in said plies, said plies including mutually spaced confronting regions disposed between said adhered regions, the combination therewith of a plurality of relatively fine, perforated pin embossments provided solely in said spaced confronting regions of said plies, said pin embossments being presented solely inwardly of and terminating within regions enclosed by said spaced confronting regions of said plies.
Claim 12
Dependent Claim
84 words
In multi-ply fibrous sheet structure of the type including a pair of plies of fibrous material adhered to one another at inwardly presented land regions provided in said plies, said plies including mutually spaced confronting regions disposed between said adhered regions, the combination therewith of a plurality of relatively fine, perforated pin embossments provided solely in said spaced confronting regions of said plies, said pin embossments being presented solely inwardly of and terminating within regions enclosed by said spaced confronting regions of said plies.
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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |