EP0185590A2
Expired / Lapsed
EP
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A method for the preparation of a laminated film
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1985-12-12
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Granted: —
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Expires: 2005-12-12
Abstract
Abstract The invention provides a method for the preparation of a laminate of a polyimide resin film and a film of a fluorocarbon resin such as a copolymeric resin of tetrafluoroethylene and hexafluoropropylene very firmly bonded together. The inventive method comprises subjecting the surface of each of the polyimide and fluorocarbon resin films to a treatment with low temperature plasma of an inorganic gas before press-bonding the films at an elevated temperature. It is preferable that the thus prepared laminate is further subjected to a heal treatment under a tensioned condition at a temperature higher than the softening point of the fluorocarbon resin so that the laminate can no longer be separated by peeling into the base films of the polyimide and fluorocarbon resins.
Inventors
- 👤 Susumu C/O Dogou Shataku 3-308 Ueno
- 👤 Kouiti C/O Dogou Shataku 1-103 Kuroda
- 👤 Hajime Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 08:47
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/28; B32B27/281; B32B38/00; B32B38/0008; B32B38/18; B32B38/1875; C; C08; C08J; C08J5/00; C08J5/12; C08J7/00; C08J7/12; C08J7/123; B32B2310/00; B32B2310/14; B32B2327/00; B32B2379/00; B32B2379/08; B32B38/0036; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/036
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
1 . A method for the preparation of a laminate of films of a polyimide resin and a fluorocarbon resin which comprises the steps of: (a) subjecting at least one of the surfaces of each of a polyimide resin film and a fluorocarbon resin film to a treatment with low temperature plasma of an inorganic gas; and (b) pressing the thus plasma-treated films laid one on the other with the surfaces treated with low temperature plasma contacting with each other at-an elevated temperature to integratethe films.
Claim 2
Dependent Claim
86 words
1 . A method for the preparation of a laminate of films of a polyimide resin and a fluorocarbon resin which comprises the steps of: (a) subjecting at least one of the surfaces of each of a polyimide resin film and a fluorocarbon resin film to a treatment with low temperature plasma of an inorganic gas; and (b) pressing the thus plasma-treated films laid one on the other with the surfaces treated with low temperature plasma contacting with each other at-an elevated temperature to integratethe films.
Claim 3
Independent Claim
114 words
A method for the preparation of a laminate of films of a polyimide yesin and a fluorocarbon resin which comprises the steps of: (a) subjecting at least one of the surfaces of each of a polyimide resin film and a fluorocarbon resin film to a treatment with low temperature plasma of an inorganic gas; (b) pressing the thus plasma-treated films laid one on the other with the surfaces treated with low temperature plasma. contacting with each other at an elevated temperature to integratethe films; and (c) subjecting the integrated body of the films to a heat treatment at a temperature of the softening point of the fluorocarbon resin or higher under a tensioned condition.
Claim 4
Independent Claim
114 words
A method for the preparation of a laminate of films of a polyimide yesin and a fluorocarbon resin which comprises the steps of: (a) subjecting at least one of the surfaces of each of a polyimide resin film and a fluorocarbon resin film to a treatment with low temperature plasma of an inorganic gas; (b) pressing the thus plasma-treated films laid one on the other with the surfaces treated with low temperature plasma. contacting with each other at an elevated temperature to integratethe films; and (c) subjecting the integrated body of the films to a heat treatment at a temperature of the softening point of the fluorocarbon resin or higher under a tensioned condition.
Claim 5
Dependent Claim
49 words
The method for the preparation of a laminate of films of a polyimide resin and a fluorocarbon resin as claimed in claim 1 wherein the elevated temperature in the step ( b ) is in the range from 100 o C to the softening point of the fluorocarbon resin.
Claim 6
Dependent Claim
44 words
The method for the preparation of a laminate of films of a polyimide resin and a fluorocarbon resin as claimed in claim 1 wherein the inorganic gas in the low temperature plasma treatment of the step (a) is oxygen, nitrogen or a mixture thereof.
Claim 7
Dependent Claim
43 words
The method for the preparation of a laminate of films of a polyimide resin and a fluorocarbon resin as claimed in claim 2 wherein the temperature of the heat treatment in the step (c) is in the range from 280 to 330 °C.
References Cited (Backward Citations)
No citation records indexed.
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