USRE31373E
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure decorative laminate having registered color and embossing
Assignee: Nevamar Corp
•
Filing: 1978-12-07
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Granted: 1983-09-06
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Expires: 1998-12-07
Abstract
Abstract A decorative high pressure laminate having registered color and embossing is produced by effecting simultaneous embossing and laminating using a three dimensional press plate acting against an overlay sheet containing high flow melamine resin and pigment, so that during the pressing operation the resin and pigment flows laterally from the high pressure areas to the low pressure areas with the result that the underlying print sheet is visible through the overlay sheet in the high pressure areas while the pigment in the overlay sheet in the low pressure areas mask the print sheet.
Inventors
- 👤 Israel S. Ungar
- 👤 Herbert I. Scher
- 👤 Delbert A. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:20
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/06; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; B44F; B44F9/00; B44F9/04; B44F9/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1043; Y10T156/1044; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24554; Y10T428/24595; Y10T428/24603; Y10T428/24612
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
14 words
A method of forming a unitary decorative laminate having registered color and embossing comprising:
Claim 2
Independent Claim
14 words
A method of forming a unitary decorative laminate having registered color and embossing comprising:
Claim 3
Dependent Claim
138 words
A. assembling in a stack from the bottom up (1) backing means for said decorative laminate, (2) a thermosetting resin impregnated fibrous print sheet provided with a first color, (3) a fibrous overlay sheet substantially uniformly impregnated with an opacifying mixture of a thermosetting resin impregnating solution having dispersed therein finely divided pigment of a color contrasting with said first color, said pigment being retained substantially on the fibers of said overlay sheet and .Iadd.not being bound to the cellulose of the paper, and .Iaddend. (4) a sculptured pressing plate die having a surface with high areas and low areas capable of being impressed into the uppermost of said fibrous sheets with said high and low areas adjacent said overlay sheet, and means to prevent said sculptured pressing plate die from sticking to said overlay sheet during lamination;
Claim 4
Dependent Claim
138 words
A. assembling in a stack from the bottom up (1) backing means for said decorative laminate, (2) a thermosetting resin impregnated fibrous print sheet provided with a first color, (3) a fibrous overlay sheet substantially uniformly impregnated with an opacifying mixture of a thermosetting resin impregnating solution having dispersed therein finely divided pigment of a color contrasting with said first color, said pigment being retained substantially on the fibers of said overlay sheet and .Iadd.not being bound to the cellulose of the paper, and .Iaddend. (4) a sculptured pressing plate die having a surface with high areas and low areas capable of being impressed into the uppermost of said fibrous sheets with said high and low areas adjacent said overlay sheet, and means to prevent said sculptured pressing plate die from sticking to said overlay sheet during lamination;
Claim 5
Dependent Claim
129 words
B. applying to the upper and lower surfaces of said assembly sufficient heat and pressure to cure said resins to produce said unitary embossed decorative high pressure laminate by (1) effecting a lamination of said fibrous sheets together with each other and with said backing means, (2) imparting the sculptured surface of said die to the uppermost of fibrous sheets and (3) effecting lateral flow of said opacifying mixture of said thermosetting resin and said pigment on said overlay sheet from the debossed portions of the surface of said laminate to the embossed portions of said laminate .Iadd.causing a separation of colors .Iaddend.so that said first color is visible in said debossed portions and said contrasting color of said finely devided pigment is visible in said embossed portions; and
Claim 6
Dependent Claim
129 words
B. applying to the upper and lower surfaces of said assembly sufficient heat and pressure to cure said resins to produce said unitary embossed decorative high pressure laminate by (1) effecting a lamination of said fibrous sheets together with each other and with said backing means, (2) imparting the sculptured surface of said die to the uppermost of fibrous sheets and (3) effecting lateral flow of said opacifying mixture of said thermosetting resin and said pigment on said overlay sheet from the debossed portions of the surface of said laminate to the embossed portions of said laminate .Iadd.causing a separation of colors .Iaddend.so that said first color is visible in said debossed portions and said contrasting color of said finely devided pigment is visible in said embossed portions; and
Claim 7
Dependent Claim
23 words
C. stripping said sculptured die from the resultant laminated assembly so as to provide said laminate having areas of registered color and embossing.
Claim 8
Dependent Claim
23 words
C. stripping said sculptured die from the resultant laminated assembly so as to provide said laminate having areas of registered color and embossing.
Claim 9
Dependent Claim
45 words
A method in accordance with claim 1 for forming a high pressure decorative laminate, wherein said backing means comprise phenolic resin impregnated core sheets, wherein said print sheet comprises a melamine resin impregnated α-cellulose paper, and said overlay sheet comprises melamine resin impregnated α-cellulose paper.
Claim 10
Dependent Claim
28 words
A method in accordance with claim 2 wherein said means to prevent said sculptured pressing plate die from sticking to said overlay sheet comprises a separate release sheet.
Claim 11
Dependent Claim
23 words
A method in accordance with claim 2 wherein said pressing plate die comprises a thin, embossed, impregnated separator sheet having a non-stick facing.
Claim 12
Dependent Claim
28 words
A method in accordance with claim 2 wherein in step B said assembly is pressed at approximately 800-1600 psi at a temperature on the order of 230°-310° F.
Claim 13
Dependent Claim
31 words
A method in accordance with claim 2 wherein said α-cellulose overlay sheet has a melamine resin content in the 65-70% range, a volatile content of 6-10% and a flow of 7-35%.
Claim 14
Dependent Claim
76 words
A method in accordance with claim 6 for forming a high pressure decorative laminate simulating leather, wherein said first color is pale yellow and wherein said finely divided pigment comprises opacifying pigments providing a dark brown color and present in a quantity of 1-5% based on the weight of the melamine resin impregnating solution. .Iadd. 8. A method in accordance with claim 1 wherein said first color is darker than the color of said pigment. .Iaddend.
References Cited (Backward Citations)
US3814647A
Cited
CH546143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |