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. 01, 2012
Filed:
Apr. 26, 2006
Shinji Fujita, Shiga, JP;
Shoichi Uemura, Shiga, JP;
Masaharu Hiki, Shiga, JP;
Youichiro Nakagawa, Shiga, JP;
Kiyoshi Taniguchi, Shiga, JP;
Keizo Kawahara, Shiga, JP;
Satoshi Maeda, Shiga, JP;
Shinji Fujita, Shiga, JP;
Shoichi Uemura, Shiga, JP;
Masaharu Hiki, Shiga, JP;
Youichiro Nakagawa, Shiga, JP;
Kiyoshi Taniguchi, Shiga, JP;
Keizo Kawahara, Shiga, JP;
Satoshi Maeda, Shiga, JP;
Toyo Boseki Kabushiki Kaisha, Osaka-shi, JP;
Abstract
An apparatus and method suitable for producing a polymer film, particularly a polyimide film, perform drying and heat treatment using a tenter type feeding apparatus that suppresses the problems of deformation of film in the vicinity of pore into which the pins bite and breakage of the pores to form long pores in the width direction. The apparatus includes a device to suppress deformation of the film in the vicinity of the tenter pins at the time point when the both ends of the film is pierced with the pins and cools the pin temperature to less than 180° C. at the time when the film is pierced with the pins. Individual pins can be arranged on the innermost side of the pin sheets so that they are all disposed at the same distance both in the film feeding direction in the individual pin sheets and between other pin sheets.