Ube Industries, Inc.

Takeshi Uekido

Hiroaki Yamaguchi

Toshiyuki Nishino

Hiroto Shimokawa

Ken Kawagishi

Hiroshi Inoue

Toshihiko Anno

Tomohiko Yamamoto

Takuji Takahashi

Masafumi Hashimoto

Naoyuki Matsumoto

A polyimide-metal laminate comprising a polyimide film and a metal layer for use as an electrode, which is formed on the side (Side B) of the polyimide film which was in contact with a support when producing a self-supporting film in the production of the polyimide film, is used to produce a CIS solar cell.

Polyimide-metal laminate and solar cell

A polyimide film which rarely undergoes the formation of bubbles, blisters or the like, even when heated to a high temperature; and a production method and a production apparatus for the polyimide film. The polyimide film production apparatus includes a support body, a cast furnace and a cure furnace, wherein the cure furnace is partitioned into multiple zones so that the temperature of a self-supporting film can be increased in a stepwise manner, and an infrared electric heater, which is disposed at a predetermined distance from the film, is arranged in a zone for heating the atmosphere of the self-supporting film to a temperature of 450&#xb0; C. or higher on the upper surface side and/or the lower surface side of the self-supporting film. The polyimide production apparatus enables the production of a polyimide film which has a volatile content of 0.1 mass % or less after being heated at 450&#xb0; C. for 20 minutes.

Polyimide film production method, polyimide film production apparatus, and polyimide film

Disclosed is a polyimide film prepared from an aromatic tetracarboxylic acid component and an aromatic diamine component, which has a dimensional change from 25&#xb0; C. to 500&#xb0; C. within a range of from &#x2212;0.3% to +0.6% based on the initial dimension at 25&#xb0; C. The polyimide film may be used as a substrate for a CIS solar cell.

Aromatic polyimide film, laminate and solar cell

An adhesion-enhanced polyimide film which includes a core layer composed of a polyimide (a) having high rigidity and a low linear expansion coefficient, at least one side of which has a thin-layer formed by heating a coated layer including a heat-resistant surface treatment agent and a polyimide precursor which yields a highly heat-resistant amorphous polyimide (B).

Adhesion-enhanced polyimide film, process for its production, and laminated body

Aromatic polyimide film and its composite sheet

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Ube, Japan

Takeshi Uekido