The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2011
Filed:
Dec. 28, 2004
Takashi Kikuchi, Shiga, JP;
Hiroyuki Tsuji, Shiga, JP;
Hisayasu Kaneshiro, Kyoto, JP;
Kaneka Corporation, Osaka-shi, JP;
Abstract
It is an object of the present invention to provide an adhesive film which is used for producing, by a laminating method, a flexible metal-clad laminate in which the change in dimensions is suppressed, a flexible metal-clad laminate including the adhesive film, and a production method therefor. The present invention relates to an adhesive film including a polyimide film and an adhesive layer containing a thermoplastic polyimide, the adhesive layer being disposed on at least one surface of the polyimide film, a flexible metal-clad laminate produced by laminating a metal foil to the adhesive film with a thermal roll laminator, and a production method therefor, wherein the polyimide film is formed by a process including step (A) of mixing a polyamic acid solution, a dehydrating agent, and an imidization catalyst, and casting and applying the mixture onto a support to form a gel film; step (B) of stripping off the gel film and fixing both ends of the gel film; and step (C) of heating and transporting the film with both ends being fixed in a state loosened in the TD direction.