Patent US3391044A successfully refreshed from Google Patents.
US3391044A
Expired / Lapsed
US
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Method for improving electric glow discharge treatment of plastic materials
Assignee: Olin Corp
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Filing: 1962-04-02
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Granted: 1968-07-02
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Walter S Kaghan
- 👤 William J Schmitt
- 👤 Percy M Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:28
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/10; B26; B26F; B26F1/00; B26F1/26; B26F1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN THE PREPARATION OF A POLYOLEFIN FILM HAVING A SURFACE RENDERED ADHERENT TO COATING COMPOSITIONS BY TREATMENT WITH A HIGH ENERGY CORONA DISCHARGE BETWEEN A PAIR OF CLOSELY SPACED SUBSTANTIALLY PARALLEL ELECTRODES ONE OF WHICH IS GROUNDED, ONE OF SAID ELECTRODES BEING A METALLIC ROLL AND THE OTHER BEING A NARROW ELONGATED ELECTRODE, THE PROCESS COMPRISING PROVIDING ONE OF SAID ELECTRODES WITH A SURFACE LAYER 0.05 TO 0.25 INCH IN THICKNESS OF VULCANIZED CHLOROSULFONATED-POLYETHYLENE HAVING A NON-CONDUCTIVE FINELY-DIVIDED PIGMENT INCORPORATED THEREIN AS AN ESSENTIAL INGREDIENT, ESTABLISHING A CORONA DISCHARGE AT A POTENTIAL OF ABOUT 3,000 TO 30,000 VOLTS BETWEEN THE SAID ELECTRODES, AND PASSING SAID FILM THROUGH SAID DISCHARGE WHILE IN CONTACT WITH THE SAID SURFACE LAYER.
Claim 2
Dependent Claim
117 words
IN THE PREPARATION OF A POLYOLEFIN FILM HAVING A SURFACE RENDERED ADHERENT TO COATING COMPOSITIONS BY TREATMENT WITH A HIGH ENERGY CORONA DISCHARGE BETWEEN A PAIR OF CLOSELY SPACED SUBSTANTIALLY PARALLEL ELECTRODES ONE OF WHICH IS GROUNDED, ONE OF SAID ELECTRODES BEING A METALLIC ROLL AND THE OTHER BEING A NARROW ELONGATED ELECTRODE, THE PROCESS COMPRISING PROVIDING ONE OF SAID ELECTRODES WITH A SURFACE LAYER 0.05 TO 0.25 INCH IN THICKNESS OF VULCANIZED CHLOROSULFONATED-POLYETHYLENE HAVING A NON-CONDUCTIVE FINELY-DIVIDED PIGMENT INCORPORATED THEREIN AS AN ESSENTIAL INGREDIENT, ESTABLISHING A CORONA DISCHARGE AT A POTENTIAL OF ABOUT 3,000 TO 30,000 VOLTS BETWEEN THE SAID ELECTRODES, AND PASSING SAID FILM THROUGH SAID DISCHARGE WHILE IN CONTACT WITH THE SAID SURFACE LAYER.
References Cited (Backward Citations)
BE510068A
Cited
US2864756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |