Patent US4501635A successfully refreshed from Google Patents.
US4501635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layer board possessing a varnish surface, process for its production and its use
Assignee: Letron GmbH
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Filing: 1983-07-01
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Granted: 1985-02-26
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Expires: 2003-07-01
Abstract
Abstract The invention provides a multi-layer board of from 0.3 to 5.0 mm. thick, comprising an upper layer of a finishing coat which is a varnish hardened by means of electron radiation, one or more carrier films and, optionally, a backing film.
Inventors
- 👤 Manfred Siry
- 👤 Hans-Dieter Diesel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:50
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/08; B32B27/00; B32B27/06; B32B27/10; B32B27/32; B32B29/00; B32B29/06; B32B7/00; B32B7/04; B32B7/12; B32B37/00; B32B37/12; B32B37/1207; B32B2037/1215; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2305/00; B32B2305/72; B32B2310/00; B32B2310/08; B32B2310/0875; B32B2310/0887; B32B2317/00; B32B2317/12; B32B2317/125; B32B2367/00; B32B2479/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
16 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising:
Claim 2
Dependent Claim
16 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising:
Claim 3
Dependent Claim
61 words
(a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at speeds of from 5 to 35 m/min. by pressing with application of elevated temperatures, said hardened finishing layer with a carrier layer and a backing layer.
Claim 4
Dependent Claim
61 words
(a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at speeds of from 5 to 35 m/min. by pressing with application of elevated temperatures, said hardened finishing layer with a carrier layer and a backing layer.
Claim 5
Dependent Claim
19 words
Process according to claim 1, characterised in that the board has a thickness from 0.4 mm. to 2.5 mm.
Claim 6
Dependent Claim
18 words
Process according to claim 1, characterised in that the board has a thickness of at most 0.8 mm.
Claim 7
Dependent Claim
15 words
Process according to claim 1, characterised in that the finishing layer is a paper sheet.
Claim 8
Dependent Claim
16 words
Process according to claim 4, wherein said finishing layer paper sheet is impregnated with synthetic resin.
Claim 9
Dependent Claim
22 words
Process according to claim 4, wherein said carrier layer comprises a paper sheet impregnated with amino resins, which sheet is partially hardened.
Claim 10
Dependent Claim
17 words
Process according to claim 6, wherein said backing layer comprises an impregnated paper sheet which is hardened.
Claim 11
Dependent Claim
24 words
Process according to claim 7, wherein said backing layer paper sheet is impregnated with amino resins, polyester resins and/or water glass and is hardened.
Claim 12
Dependent Claim
13 words
Process according to claim 1, wherein pressing is effected between pairs of rollers.
Claim 13
Dependent Claim
17 words
Process according to claim 1 to 9, characterised in that pressing is effected between pairs of rollers.
Claim 14
Dependent Claim
22 words
Process according to claim 1 to 9, characterised in that lamination is effected at a speed of from 5 to 35 m/min.
Claim 15
Dependent Claim
21 words
Process according to claim 11, characterized in that the pressing is effected at a speed of from 12 to 25 m/min.
Claim 16
Dependent Claim
14 words
Process according to claim 1, wherein the varnish surface is given a three-dimensional shape.
Claim 17
Dependent Claim
15 words
Process according to claim 1, wherein said pressing is effected under conditions of elevated temperature.
Claim 18
Dependent Claim
75 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising: (a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at from 5 to 35 m/min. by pressing with application of elevated temperatures said hardened finishing layer with a carrier layer and a backing layer.
Claim 19
Dependent Claim
75 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising: (a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at from 5 to 35 m/min. by pressing with application of elevated temperatures said hardened finishing layer with a carrier layer and a backing layer.
Claim 20
Dependent Claim
13 words
Process according to claim 15, wherein said finishing layer comprises a paper sheet.
Claim 21
Dependent Claim
42 words
Process according to claim 16, wherein (a) said carrier layer comprises a paper sheet impregnated with amino resins and partially hardened, and (b) said backing layer comprises a paper sheet impregnated with amino resins, acrylic dispersions and/or water glass and is hardened.
Claim 22
Dependent Claim
75 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising: (a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at from 5 to 35 m/min. by pressing with application of elevated temperatures said hardened finishing layer with a thermo-reactive adhesive and a backing layer.
Claim 23
Dependent Claim
75 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising: (a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at from 5 to 35 m/min. by pressing with application of elevated temperatures said hardened finishing layer with a thermo-reactive adhesive and a backing layer.
Claim 24
Dependent Claim
14 words
Process according to claim 18, wherein the varnish surface is given a three-dimensional shape.
Claim 25
Dependent Claim
17 words
Process according to claim 18, wherein the finishing layer comprises a paper sheet impregnated with synthetic resins.
Claim 26
Dependent Claim
37 words
Process according to claim 20, wherein the backing layer which is pressed with the adhesive and the finishing layer, comprises a paper sheet which is impregnated with amino resins, polyester resins and/or water glass and is hardened.
Claim 27
Dependent Claim
75 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising: (a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at from 5 to 35 m/min. by pressing with application of elevated temperatures said hardened finishing layer with a thermo-reactive adhesive and a backing layer.
Claim 28
Dependent Claim
75 words
Process for the continuous production of a multi-layer board of from 0.3 to 5.0 mm, comprising: (a) varnishing a finishing layer with a varnish which is hardenable by electron radiation, (b) hardening in one step said varnish by electron radiation prior to lamination of said finishing layer, (c) continuously laminating at from 5 to 35 m/min. by pressing with application of elevated temperatures said hardened finishing layer with a thermo-reactive adhesive and a backing layer.
Claim 29
Dependent Claim
12 words
Process of claim 22, wherein the finishing layer comprises a paper sheet.
Claim 30
Dependent Claim
42 words
Process of claim 23, wherein the carrier layer further comprises (a) a paper sheet impregnated with amino acids and partially hardened, and (b) said backing layer comprises a paper sheet impregnated with amino resins, acrylic dispersions and/or water glass and is hardened.
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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |