Patent US4812186A successfully refreshed from Google Patents.
US4812186A
Expired / Lapsed
US
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Process for the manufacture of cellular core laminated elements
Assignee: JOHN COTTON (COLNE) Ltd A BRITISH Co
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Filing: 1987-05-14
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Granted: 1989-03-14
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Expires: 2007-05-14
Abstract
Abstract A method for the manufacture of a laminated element comprising a thermoformed cellular core material and one or more reinforcing and/or decorative web layers which comprises applying an adhesive coating to said web, placing the thermoformable cellular core material on said coated web to form an intermediate laminated element, and placing the intermediate laminated product without substantial preheating in a heated mould to deform the thermoformable cellular core material to a desired final shape and to cure the adhesive.
Inventors
- 👤 Anthony McConnell
- 👤 Anthony M. Bedford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:41
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B37/00; B32B37/12; B32B38/00; B32B38/08; B32B5/00; B32B5/18; B32B5/22; B32B5/24; B32B5/245; B29K; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/08; B29K2105/0809; B32B2037/1253; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2305/00; B32B2305/08; B32B2605/00; B32B2605/08; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A method for the manufacture of a laminated element comprising a thermoformed cellular core material and one or more reinforcing and/of decorative layers which comprises a scrim layer and a first reinforcing layer, applying an adhesive coating to said first reinforcing layer, placing a thermoformable cellular core material on the adhesive coated first reinforcing layer, placing a second reinforcing layer on the thermoformable cellular core layer, applying an adhesive to said second reinforcing layer and applying a decorative layer thereon, placing the foregoing composite in a heated mold to deform the thermoformable cellular core material to the desired final shape and to cure the adhesives.
Claim 2
Independent Claim
105 words
A method for the manufacture of a laminated element comprising a thermoformed cellular core material and one or more reinforcing and/of decorative layers which comprises a scrim layer and a first reinforcing layer, applying an adhesive coating to said first reinforcing layer, placing a thermoformable cellular core material on the adhesive coated first reinforcing layer, placing a second reinforcing layer on the thermoformable cellular core layer, applying an adhesive to said second reinforcing layer and applying a decorative layer thereon, placing the foregoing composite in a heated mold to deform the thermoformable cellular core material to the desired final shape and to cure the adhesives.
Claim 3
Dependent Claim
16 words
A method according to claim 1 wherein the first and second reinforcing layers are substantially identical.
Claim 4
Dependent Claim
20 words
A method according to claim 1 wherein the adhesive is a thermosetting composition which is cured in the heated mould.
Claim 5
Dependent Claim
33 words
A method according to claim 1 wherein the thermoformable core material is pre-cut to a size and thickness appropriate to the desired final product before being placed on the adhesive coated reinforcing layer.
Claim 6
Dependent Claim
30 words
A method according to claim 1 wherein said scrim layer has a layer of material thereon to prevent the adhesive on the first reinforcing layer from penetrating the scrim layer.
Claim 7
Dependent Claim
14 words
A method according to claim 1 wherein the thermoformable cellular core material is non-flammable.
Claim 8
Dependent Claim
11 words
A method according to claim 1 wherein the adhesives are non-flammable.
Claim 9
Dependent Claim
18 words
A method according to claim 1 wherein the heated mold is heated to 120° C. to 200° C.
References Cited (Backward Citations)
US4261775A
Cited
US4698252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |