Patent US4366204A successfully refreshed from Google Patents.
US4366204A
Expired / Lapsed
US
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Foamed plastics laminates
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-06-11
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Granted: 1982-12-28
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Expires: 2001-06-11
Abstract
Abstract Laminated foamed plastics articles, especially polyurethane and polyisocyanurate rigid foam panels, are faced with a fibrous composite material comprising fibres, especially glass fibres, and vermiculite lamellae. The vermiculite lamellae are preferably size-graded to eliminate larger lamellae. Preformed flexible layers of the fibrous composite material may be used to face rigid foam board in a continuous lamination process. The articles have good fire resistance properties.
Inventors
- 👤 Peter J. Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:06
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B19/00; B32B19/02; B32B19/04; B32B19/047; B32B5/22; B32B5/24; B32B5/245; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/243; E04C2/246; B32B2262/00; B32B2262/10; B32B2262/101; B32B2264/00; B32B2264/10; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
A laminated article having a foamed plastics core covered, at least in part, with a fibrous composite material comprising fibre and vermiculite lamellae.
Claim 2
Dependent Claim
23 words
A laminated article having a foamed plastics core covered, at least in part, with a fibrous composite material comprising fibre and vermiculite lamellae.
Claim 3
Dependent Claim
20 words
An article according to claim 1 in which the foamed plastics core is made of rigid polyurethane or polyisocyanurate foam.
Claim 4
Dependent Claim
20 words
An article according to claim 1 in which the vermiculite lamellae have a particle size of less than 50 microns.
Claim 5
Dependent Claim
15 words
An article according to claim 1 in which the fibrous material is made of glassfibre.
Claim 6
Dependent Claim
26 words
An article according to claim 1 in which composite layer contains vermiculite lamellae in amount of from 0.05% to 100% by weight of the fibrous material.
Claim 7
Dependent Claim
31 words
A process for the manufacture of a laminated article in which a foamed plastics core is covered, at least in part, with a fibrous composite material comprising fibre and vermiculite lamellae.
Claim 8
Dependent Claim
31 words
A process for the manufacture of a laminated article in which a foamed plastics core is covered, at least in part, with a fibrous composite material comprising fibre and vermiculite lamellae.
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) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |