EP0178907A2
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EP
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Activation apparatus and method
Assignee: Nippon Paint Co Ltd
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Filing: 1985-10-15
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Granted: —
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Expires: 2005-10-15
Abstract
Abstract Activation apparatus (K) which comprises an excitation electrode (11); an opposing electrode (9); a dielectric number (10) disposed between the excitation and opposing electrodes (9, 11); a high-voltage AC power source (4) connected to the excitation and opposing electrodes (9, 11); an ion-inducing electrode (14) confronting and spaced from the excitation electrode (ii); either the high-voltage AC power source (4) or a separate high-voltage power source connected to, and capable of causing an electric discharge in the space (12) between, the excitation and ion-inducing electrodes (11, 14); characterised in that a second dielectric (13) is disposed between the excitation and ion-inducing electrodes (11, 14). An article can be activated, on discharge, by insertion into the discharge region.
Inventors
- 👤 Shoji Ikeda
- 👤 Koichi Tsutsui
- 👤 Toshiyuki Saitoh
- 👤 Tsuguya Inagaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:27
CPC Classifications
H; H01; H01T; H01T19/00; B; B29; B29C; B29C59/00; B29C59/14
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
106 words
Activation apparatus (K) which comprises an excitation electrode (11); a first opposing electrode (9): a first dielectric member (10) disposed between the excitation and first opposing electrodes (9,11); a first high-voltage AC power source (4) connected to the excitation and first opposing electrodes (9,11); an ion-inducing electrode (14) confronting and spaced from the excitation electrode (11); either the first high-voltage AC power source (4) or a separate high-voltage power source connected to, and capable of causing an electric discharge in the space (12) between, the excitation and ion-inducing electrodes (11,14); characterised in that a second dielectric (13) is disposed between the excitation and ion-inducing electrodes (11,14).
Claim 2
Dependent Claim
106 words
Activation apparatus (K) which comprises an excitation electrode (11); a first opposing electrode (9): a first dielectric member (10) disposed between the excitation and first opposing electrodes (9,11); a first high-voltage AC power source (4) connected to the excitation and first opposing electrodes (9,11); an ion-inducing electrode (14) confronting and spaced from the excitation electrode (11); either the first high-voltage AC power source (4) or a separate high-voltage power source connected to, and capable of causing an electric discharge in the space (12) between, the excitation and ion-inducing electrodes (11,14); characterised in that a second dielectric (13) is disposed between the excitation and ion-inducing electrodes (11,14).
Claim 3
Dependent Claim
61 words
Apparatus as claimed in claim 1, which further comprises a second opposing electrode (17), on the side of the ion-inducing electrode (14') remote from the space (12); a third dielectric (16), disposed between the ion-inducing and second opposing electrode (14',17); and either the first or a second high-voltage AC power source (4,4b) connected to the ion-inducing and second opposing electrodes (14',17).
Claim 4
Dependent Claim
17 words
Apparatus as claimed in claim 2, in which there is no second high-voltage AC power source (4b).
Claim 5
Dependent Claim
16 words
Apparatus as claimed in any preceding claim, in which there is no separate high-voltage power source.
Claim 6
Dependent Claim
34 words
Apparatus as claimed in any preceding claim, in which either or each of the excitation and ion-inducing electrodes (11,14) has a plate-like shape and has a plurality of slots (lla,14a) extending across its width.
Claim 7
Dependent Claim
31 words
Apparatus as claimed in any preceding claim, in which the excitation, first opposing and ion-inducing electrodes (11,14) are made of one of tungsten, aluminium, steel, stainless steel, brass, copper and carbon.
Claim 8
Dependent Claim
28 words
Apparatus as claimed in any preceding claim, in which the dielectric member (10) is made of one of rubber, glass, ceramics, plastics, enamel, asbestos, marble, slate and mica.
Claim 9
Dependent Claim
34 words
Apparatus as claimed in any preceding claim, in which the or each high-voltage AC power source (4,4b) has an output voltage of 10 to 50 kV at a frequency of 1 to 100 kHz.
Claim 10
Dependent Claim
43 words
Apparatus according to any preceding claim, in which the first dielectric member defines a gas passage having a gas inlet and a gas outlet, in which the excitation and opposing electrodes are disposed at the inner and outer peripheral faces of the member.
Claim 11
Dependent Claim
17 words
Apparatus according to claim 9, in which the gas passage is of a circular or rectangular cross-section.
Claim 12
Independent Claim
52 words
A method of activating a surface of an article, which comprises the steps of: applying a high-voltage between an excitation electrode and an opposing electrode, and thereby forming an electrode discharge region; introducing gas to the electric discharge region, thereby converting the gas into plasma; and injecting the plasma over the article.
Claim 13
Independent Claim
52 words
A method of activating a surface of an article, which comprises the steps of: applying a high-voltage between an excitation electrode and an opposing electrode, and thereby forming an electrode discharge region; introducing gas to the electric discharge region, thereby converting the gas into plasma; and injecting the plasma over the article.
Claim 14
Dependent Claim
16 words
A method according to claim 11, in which a dielectric member is disposed between the electrodes.
Claim 15
Dependent Claim
19 words
A method according to claim 11, in which apparatus according to any of claims 1 to 10 is used.
Claim 16
Independent Claim
28 words
A method according to any of claims 11 to 13, in which a or the gas outlet is displaced relative to the article in linear and/or rotation motion.
Claim 17
Independent Claim
21 words
A method according to any of claims 11 to 14, in which the gas is oxygen, nitrogen or a mixture thereof.
Claim 18
Independent Claim
28 words
A method according to any of claims 11 to 15, in which the high-voltage ranges from 10 to 50 kV at a frequency of 1 to 100 kHz.
Claim 19
Independent Claim
23 words
A method according to any of claims 11 to 16, in which the article is a plastics or fibrous product, paper or wood.
References Cited (Backward Citations)
No citation records indexed.
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