US4140566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced sheet-type wallcovering
Assignee: Imperial Chemical Industries Ltd
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Filing: 1977-03-14
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Granted: 1979-02-20
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Expires: 1997-03-14
Abstract
Abstract Production of a wall or ceiling covering comprising an embossed laminate of a first printable embossable ply, and a second supporting ply. The first ply consists of a paper sheet containing 60-100% by weight of cellulose wood pulp fibers and 0-40% discontinuous fibers of a synthetic thermo-plastic polymeric material. The second ply consists of a sheet of 10-60% cellulosic wood pulp fibers, and 40-90% of thermoplastic fibers (either the same as or different than those in the first ply). A fused three dimensional network is formed by heating the laminate to a temperature at which the thermoplastic fibers are rendered plastic.
Inventors
- 👤 Arthur Burton
- 👤 Roy Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/02; B32B29/002; B32B29/005; B32B38/00; B32B38/06; D; D21; D21H; D21H13/00; D21H13/10; D21H13/12; D21H13/14; D21H27/00; D21H27/18; D21H27/20; D21H27/30; D21H27/38; B32B2255/00; B32B2255/12; B32B2255/26; B32B2419/00; B32B2419/06; B32B2607/00; B32B2607/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31591; Y10T428/31725; Y10T428/31779; Y10T428/31783; Y10T428/31786; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A method of producing a wall- or ceiling- covering comprising the steps of laminating a first printable embossable ply consisting of a paper sheet containing from 60 to 100% by weight of cellulose wood pulp fibres and from 0 to 40% by weight of discontinuous fibres of a synthetic thermoplastic polymeric material and another supporting ply comprising a sheet containing from 10 to 60% by weight of cellulosic wood pulp fibres and from 40 to 90% by weight of discontinuous fibres of the same or different synthetic thermoplastic polymeric material, heating the laminate to a temperature at which the thermoplastic fibres are rendered plastic and fuse together to form a three dimensional network, and either simultaneously or subsequently embossing the hot laminate.
Claim 2
Independent Claim
122 words
A method of producing a wall- or ceiling- covering comprising the steps of laminating a first printable embossable ply consisting of a paper sheet containing from 60 to 100% by weight of cellulose wood pulp fibres and from 0 to 40% by weight of discontinuous fibres of a synthetic thermoplastic polymeric material and another supporting ply comprising a sheet containing from 10 to 60% by weight of cellulosic wood pulp fibres and from 40 to 90% by weight of discontinuous fibres of the same or different synthetic thermoplastic polymeric material, heating the laminate to a temperature at which the thermoplastic fibres are rendered plastic and fuse together to form a three dimensional network, and either simultaneously or subsequently embossing the hot laminate.
Claim 3
Dependent Claim
36 words
A method as claimed in claim 1 in which the paper sheet contains from 85 to 95% by weight of cellulose fibres and from 5 to 15% of discontinuous fibres of the synthetic thermoplastic polymeric material.
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) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |