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:
Nov. 05, 2019
Filed:
Dec. 25, 2013
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventors:
Nobuhiro Watanabe, Ichihara, JP;
Takayoshi Tanaka, Ichihara, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 48/04 (2019.01); B29B 9/02 (2006.01); B01D 35/18 (2006.01); B29C 48/69 (2019.01); B29C 48/694 (2019.01); B29B 9/06 (2006.01); B29K 69/00 (2006.01); B29C 48/30 (2019.01); B29C 48/00 (2019.01); B29C 48/345 (2019.01); B29C 48/87 (2019.01);
U.S. Cl.
CPC ...
B29B 9/02 (2013.01); B01D 35/18 (2013.01); B29C 48/04 (2019.02); B29C 48/69 (2019.02); B29C 48/694 (2019.02); B29B 9/06 (2013.01); B29C 48/0022 (2019.02); B29C 48/30 (2019.02); B29C 48/345 (2019.02); B29C 48/87 (2019.02); B29C 2793/0027 (2013.01); B29K 2069/00 (2013.01);
Abstract
An extrusion pelletizer for a polycarbonate resin includes: an extruder; a cooling unit; and a cutter. The extruder includes a cylinder top, a first adapter, a polymer filter unit, a second adapter, and a die head. The polymer filter unit includes a plurality of stick-shaped filter elements therein. A temperature of the second adapter is set to be lower than a temperature of the polymer filter unit. The cooling unit and the cutter are disposed under an atmosphere in which air cleanliness defined in accordance with JIS B 9920 is any one of class 1 to class 7.