Patent US4739800A successfully refreshed from Google Patents.
Patent US4064030A successfully refreshed from Google Patents.
US4064030A
Expired / Lapsed
US
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Process for surface treating molded articles of fluorine resins
Assignee: Nitto Denko Corp
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Filing: 1976-04-14
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Granted: 1977-12-20
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Expires: 1996-04-14
Abstract
Abstract The surface of a molded article of a fluorine resin is treated to provide better adhesion by sputter etching it in an atmosphere whose pressure is maintained at about 0.0005 to about 0.5 Torr.
Inventors
- 👤 Junkichi Nakai
- 👤 Kazuo Fukunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B29; B29C; B29C59/00; B29C59/16; B29C35/00; B29C35/02; B29C35/08; B29C35/0866; B29C2035/0872; C08J2327/00; C08J2327/02; C08J2327/12; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/034; H05K3/00; H05K3/38; H05K3/381; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
166 words
A process for surface treating a molded article, which comprises subjecting a molded article of a fluorinated olefin polymer to sputter etching by bringing the fluorinated olefin polymer into contact with a cathode in a chamber internally equipped with an anode and the cathode with the minimum distance between the anode and the cathode being substantially 1/√P, wherein P is the pressure in Torr, said chamber being capable of being evacuated to provide a vacuum therein, and in this state applying a high frequency of several hundred KHz to several ten MHz alternating current between the anode and the cathode while maintaining the pressure and temperature of the gaseous atmosphere in the chamber at about 0.0005 to about 0.5 Torr and about -10° C to about 40° C, with the product of the discharge power for the sputter etching and the treating time being about 1 to about 1,000 watt. sec/cm 2 , to thereby sputter etch the molded article in the resulting cathode dark space.
Claim 2
Dependent Claim
166 words
A process for surface treating a molded article, which comprises subjecting a molded article of a fluorinated olefin polymer to sputter etching by bringing the fluorinated olefin polymer into contact with a cathode in a chamber internally equipped with an anode and the cathode with the minimum distance between the anode and the cathode being substantially 1/√P, wherein P is the pressure in Torr, said chamber being capable of being evacuated to provide a vacuum therein, and in this state applying a high frequency of several hundred KHz to several ten MHz alternating current between the anode and the cathode while maintaining the pressure and temperature of the gaseous atmosphere in the chamber at about 0.0005 to about 0.5 Torr and about -10° C to about 40° C, with the product of the discharge power for the sputter etching and the treating time being about 1 to about 1,000 watt. sec/cm 2 , to thereby sputter etch the molded article in the resulting cathode dark space.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the fluorinated olefin polymer is an α-fluoroolefin polymer.
Claim 4
Dependent Claim
29 words
The process of claim 2 wherein during the treatment the sputter etching is carried out with the introduction of said atmosphere gas during the discharge treatment from external means.
Claim 5
Dependent Claim
17 words
The process of claim 3 wherein the fluorinated olefin polymer is polytetrafluoroethylene or a fluoroethylene propylene polymer.
Claim 6
Dependent Claim
30 words
The process of claim 2 wherein during the treatment the sputter etching is carried out without the introduction of said atmosphere gas from any external means during the discharge treatments
Claim 7
Dependent Claim
17 words
The process of claim 5 wherein the fluorinated olefin polymer is polytetrafluoroethylene or a fluoroethylene propylene polymer.
Claim 8
Dependent Claim
16 words
The process of claim 2 wherein the high frequency current has a frequency of 13.56 MHz.
Claim 9
Dependent Claim
28 words
The process of claim 2 wherein the product of the discharge power for the sputter etching and the treating time is 5 to 500 Watt. sec/cm 2 .
Claim 10
Dependent Claim
28 words
The process of claim 2 wherein the product of the discharge power for the sputter etching and the treating time is 80 to 300 Watt. sec/cm 2 .
Claim 11
Dependent Claim
31 words
The process for continuously surface treating a sheet like article of a fluorinated olefin polymer according to claim 1 wherein a sheet take-up and drive device is provided in said chamber.
Claim 12
Dependent Claim
27 words
A process for continuously surface treating a sheet like article of a fluorinated olefin polymer according to claim 1 wherein the cathode is a rotary roll cathode.
Claim 13
Dependent Claim
24 words
The process of claim 2 wherein the α-fluoroolefin polymer is prepared from perfluorinated α-fluoroolefin monomer or contains hydrogen atoms in addition to fluorine atoms.
Claim 14
Dependent Claim
48 words
The process of claim 2 wherein said α-fluoroolefin polymer is a polymer or copolymer having a molecular weight of about 1 × 10 4 to about 1 × 10 7 and a fluorine content of about 40 to about 76 weight % based on the polymer or copolymer.
Claim 15
Dependent Claim
17 words
The process of claim 1 wherein the fluorinated olefin polymer is polytetrafluoroethylene or a fluoroethylene propylene polymer.
Claim 16
Dependent Claim
14 words
The process of claim 1 wherein the molded article is a sheet or film.
Claim 17
Dependent Claim
16 words
The process of claim 1 wherein said pressure of the atmosphere is 0.001 to 0.15 Torr.
Claim 18
Dependent Claim
16 words
The process of claim 1 wherein said pressure of the atmosphere is 0.005 to 0.01 Torr.
References Cited (Backward Citations)
US3617354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |