Functional film and process for its production
AssigneeTakiron Co., Ltd.
InventorsKosuke Iida, Hiroshi Yamato, Yoji Kadono
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Abstract
Functional films comprising a thermoplastic resin having formed thereon a coating layer and a process for their production are disclosed. The films have improved properties including improved heat resistance, are inexpensive, and are for general-purpose. They are produced by baking a thin film of a phenol resin, an epoxy resin, a silicone resin, etc., onto a thermoplastic resin substrate and can be utilized for flexible printed circuit base, insulating tapes, etc.
Claims10
A process for producing a functional film, which comprises a step of forming a thin film of a solution of one, two or more resins selected from among phenol resin, epoxy resin, melamine resin, silicone resin, fluorine resin, polyimide resin, polyamidoimide resin, polyparabanic acid resin, and polyhydantoin resin on one or both sides of a base substrate composed of a flexible thermoplastic resin, and a step of baking said thin film at 130.degree. to 300.degree. C. for 0.5 to 5 minutes with keeping it in a flatly form-retained state without looseness using a clipping mechanism to form a coating layer.
Dependencies are inferred from the claim text.