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:
Apr. 14, 2015
Filed:
Dec. 16, 2010
Michimasa Ote, Saitama, JP;
Takashi Gonda, Saitama, JP;
Junya Ishida, Saitama, JP;
Kenro Takizawa, Saitama, JP;
Kazuhiro Suzuki, Saitama, JP;
Yuzo Morioka, Saitama, JP;
Michimasa Ote, Saitama, JP;
Takashi Gonda, Saitama, JP;
Junya Ishida, Saitama, JP;
Kenro Takizawa, Saitama, JP;
Kazuhiro Suzuki, Saitama, JP;
Yuzo Morioka, Saitama, JP;
Shin-Etsu Polymer Co., Ltd., Tokyo, JP;
Abstract
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.