Patent EP0190918A1 successfully refreshed from Google Patents.
US3661672A
Expired / Lapsed
US
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Method of forming high pressure decorative laminates having registered color and embossing
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-07-17
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Granted: 1972-05-09
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Expires: 1990-07-17
Abstract
Abstract High pressure decorative laminates having registered color and embossing are provided by temporarily laminating a sheet impregnated with an incompletely B-staged melamine resin to an embossed plate and simultaneously embossing such sheet throughout its thickness, by then printing a design on the exposed surface of the now embossed sheet in registry with the embossing thereon, and using this temporary laminate in the production of a high pressure laminate whereby the melamine resin impregnated and color coated sheet is transferred from the embossed plate during lamination.
Inventors
- 👤 John E Mcquade Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:03
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/12; B44; B44C; B44C3/00; B44C3/08; B44C3/085; B32B37/00; B32B37/06; B32B37/10; B32B38/00; B32B38/06; B32B38/14; B32B38/145; B32B7/00; B32B7/04; B32B7/06; B44C5/00; B44C5/04; B44C5/0469; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2451/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24529; Y10T428/24942; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
11 words
an overlay sheet impregnated with an incompletely B-staged melamine resin, and
Claim 2
Dependent Claim
10 words
a resin impregnated print layer facing said printed overlay, and
Claim 3
Dependent Claim
66 words
A method in accordance with claim 1, wherein said printing in step (c) provides a color coating over said exposed elevated portions of said overlay sheet, to thereby produce in said high pressure laminate debossed portions provided with said color printed on said elevated portions of said overlay sheet in step (c), the remainder of said laminate being provided with the print of said print layer.
Claim 4
Dependent Claim
46 words
A meThod in accordance with claim 1 comprising, preliminary to step (a), impregnating Alpha -cellulose paper with a melamine resin solution of no more than about 55 percent by weight solids, and drying said paper to produce said overlay sheet impregnated with incompletely B-staged melamine resin.
Claim 5
Dependent Claim
64 words
a plurality of resin impregnated core layers; e. pressing said assembly under high heat and pressure to form a high pressure laminate; and f. stripping said embossed plate from the upper surface of said high pressure laminate whereby portions thereof are provided with the color printed on said overlay sheet in step (c), the remainder being provided with the print of said print layer.
Claim 6
Dependent Claim
70 words
a non-adherent cushion sheet; b. pressing said stack under heat and pressure to emboss said overlay sheet throughout its thickness so as to provide elevated and depressed portions on its exposed surface, to advance the cure of the melamine impregnant to the B-stage and to laminate said overlay sheet to said embossed plate; c. printing a design on the exposed surface of said overlay sheet; d. providing an assembly of
Claim 7
Dependent Claim
52 words
A method in accordance with claim 1 wherein said B-staged melamine resin impregnated overlay sheet comprises Alpha -cellulose paper containing, per 100 pounds of Alpha -cellulose paper, about 60-70 pounds of solid melamine resin and about 10-15 pounds of volatile solvents, said impregnated overlay sheet having a flow percent of about 20-35.
Claim 8
Dependent Claim
31 words
A method in accordance with claim 1 wherein said pressing in step (b) is carried out at about 400-600 psi and at a temperature on the order of about 200* F.
Claim 9
Dependent Claim
21 words
A method in accordance with claim 1 wherein said embossed plate comprises an embossed impregnated separator sheet having a non-stick facing.
Claim 10
Dependent Claim
29 words
A method in accordance with claim 1 wherein said non-adherent cushion sheet in step (a) comprises a paper sheet and further comprising a release sheet or parting membrane thereon.
Claim 11
Dependent Claim
46 words
A method in accordance with claim 1 wherein in said assembly of step (d) said resin impregnated print layer comprises Alpha -cellulose paper impregnated with melamine resin at the B-stage, and said resin impregnated core layers each comprise paper impregnated with phenolic resin at the B-stage.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |