Shin-etsu Polymer Co., Ltd.

Michimasa Ote

Kazuhiro Suzuki

Kenro Takizawa

Yuzo Morioka

Junya Ishida

Takashi Gonda

When extrusion of a molten resin by means of an extruder is started, a simple polyetherimide resin is melt extruded from a lip portionof a T-die, and a film of the simple polyetherimide resin is molded. The molding material is then switched to a resin composition including the polyetherimide resin and a fluorine resin and then a film of the resin composition is continuously extruded and molded from the T-die. Having been covered with a very thin filmof the simple polyetherimide resin, on a flow passage face of the lip portionof the T-die, a resin composition layerincluding a polyetherimide resin and a fluorine resin, which has affinity with the film, is then formed at a center part.

Method of manufacturing film for film capacitor and film for film capacitor

The present invention provides a method for manufacturing a film for a film capacitor making it possible to produce a film for a film capacitor which has a thickness of 10 &#x3bc;m or less and which is excellent in a heat resistance and a voltage resistance at a high thickness accuracy by using a polyetherimide resin and provides as well a film for a film capacitor. The above manufacturing method comprises the steps of:

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Saitama, Japan

Michimasa Ote