Patent US3876479A successfully refreshed from Google Patents.
US3876479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a synthetic resin substrate
Assignee: Individual
•
Filing: 1973-04-20
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Granted: 1975-04-08
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Expires: 1993-04-20
Abstract
Abstract A synthetic resin substrate having a roughened surface suitable for obtaining a high adhesion with film deposited thereon can be obtained by lamintating an aluminum foil which has been subjected to electrolytic etching and a synthetic resin substrate so that the etched surface of the aluminum foil contacts the resin substrate, combining them under heat and pressure and then removing the aluminum foil by chemical etching.
Inventors
- 👤 Toshio Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:12
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/381; C; C25; C25F; C25F3/00; C25F3/02; C25F3/04; H05K2203/00; H05K2203/11; H05K2203/1152; H05K3/10; H05K3/18; H05K3/181; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
IN A METHOD FOR PRODUCING A SYNTHETIC RESIN SUBSTRATE HAVING A ROUGHENED SURFACE WHICH COMPRISES LAMINATING AN ALUMINUM FOIL HAVING IRREGULARITIES ON ITS SURFACE AND A SYNTHETIC RESIN SUBSTRATE SO THAT ALUMINUM FOIL HAVING IRREGULARITIES ON ITS SURFACE IS SUPERPOSED ON THE SYNTHETIC RESIN SUBSTRATE; HEATING AND PRESSING THE RESULTANT ASSEMBLY AND THEREAFTER REMOVING THE ALUMINUM FOIL BY CHEMICAL ETCHING; THE IMPROVEMENT WHEREIN AN ALUMINUM FOIL WHICH HAS BEEN SUBJECTED TO ELECTROLYTIC ETCHING IS USED AS SAID ALUMINUM FOIL HAVING IRREGULARITIES ON ITS SURFACE.
Claim 2
Dependent Claim
84 words
IN A METHOD FOR PRODUCING A SYNTHETIC RESIN SUBSTRATE HAVING A ROUGHENED SURFACE WHICH COMPRISES LAMINATING AN ALUMINUM FOIL HAVING IRREGULARITIES ON ITS SURFACE AND A SYNTHETIC RESIN SUBSTRATE SO THAT ALUMINUM FOIL HAVING IRREGULARITIES ON ITS SURFACE IS SUPERPOSED ON THE SYNTHETIC RESIN SUBSTRATE; HEATING AND PRESSING THE RESULTANT ASSEMBLY AND THEREAFTER REMOVING THE ALUMINUM FOIL BY CHEMICAL ETCHING; THE IMPROVEMENT WHEREIN AN ALUMINUM FOIL WHICH HAS BEEN SUBJECTED TO ELECTROLYTIC ETCHING IS USED AS SAID ALUMINUM FOIL HAVING IRREGULARITIES ON ITS SURFACE.
Claim 3
Dependent Claim
24 words
The method according to claim 1, wherein said electrolytic etching of the aluminum foil is carried out by dippint it in an electrolytic etching
Claim 4
Dependent Claim
37 words
The method according to claim 2, wherein said electrolytic etching of the aluminum foil is carried out at a temperature of 50.degree. - 80.degree. C, a current density of 10 - 200 A/dm.sup.2 and an etching time
Claim 5
Dependent Claim
12 words
The method according to claim 1, wherein the depth of the irregularities
Claim 6
Dependent Claim
12 words
The method according to claim 1, wherein the surface of the aluminum
Claim 7
Dependent Claim
26 words
The method according to claim 1, wherein the aluminum foil is first dipped in an aqueous solution of an alkali or an acid to roughen the
Claim 8
Dependent Claim
23 words
The method according to claim 1, wherein the aluminum foil which has been subjected to electrolytic etching has an electrostatic capacity of 60
Claim 9
Dependent Claim
12 words
The method according to claim 1, wherein the aluminum foil has a
Claim 10
Dependent Claim
20 words
The method according to claim 1, wherein the synthetic resin is a thermoplastic resin selected from ABS resin, polycarbonate resin,
Claim 11
Dependent Claim
21 words
The method according to claim 1, wherein the synthetic resin is a thermosetting resin selected from epoxy resin, phenolic resin and
Claim 12
Dependent Claim
21 words
The method according to claim 10, wherein the resin is reinforced with glass cloth, paper, non-woven fabric, asbestos or polyester fibers.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |