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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.:

US 9718217 B1

PDFFull Text
Date of Patent:
Aug. 01, 2017

Filed:

Oct. 16, 2015

Kneading apparatus, method for producing thermoplastic resin molded product, and foam injection molding method

Applicant:

Hitachi Maxell, Ltd., Ibaraki-shi, Osaka, JP;

Inventors:

Atsushi Yusa, Nagaokakyo, JP;

Satoshi Yamamoto, Settsu, JP;

Tetsuya Ano, Takatsuki, JP;

Hironori Ota, Ibaraki, JP;

Assignee:

HITACHI MAXELL, LTD., Ibaraki, JP;

Attorney:

Oliff PLC

Primary Examiner:

Joseph S Del Sole

Assistant Examiner:

John Robitaille

Int. Cl.
CPC ...
B29C 35/00 (2006.01); B29B 7/80 (2006.01); B29B 7/88 (2006.01); B29C 44/02 (2006.01); B29C 44/34 (2006.01); B29C 47/00 (2006.01); B29C 47/10 (2006.01); B29C 47/40 (2006.01); B29C 47/82 (2006.01); B29C 47/92 (2006.01); B29B 7/42 (2006.01); B29C 47/38 (2006.01); B29C 47/60 (2006.01); B29C 45/18 (2006.01); B29C 45/52 (2006.01); B01F 7/00 (2006.01); B01F 15/00 (2006.01); B29C 47/80 (2006.01); B29C 47/08 (2006.01); B29C 45/17 (2006.01); B29C 45/60 (2006.01); B29C 45/00 (2006.01);
U.S. Cl.
CPC ...
B29B 7/801 (2013.01); B01F 7/00416 (2013.01); B01F 15/00357 (2013.01); B29B 7/42 (2013.01); B29B 7/88 (2013.01); B29C 44/02 (2013.01); B29C 44/3442 (2013.01); B29C 45/1816 (2013.01); B29C 45/52 (2013.01); B29C 47/0042 (2013.01); B29C 47/0801 (2013.01); B29C 47/0805 (2013.01); B29C 47/1009 (2013.01); B29C 47/1072 (2013.01); B29C 47/1081 (2013.01); B29C 47/385 (2013.01); B29C 47/40 (2013.01); B29C 47/6018 (2013.01); B29C 47/6075 (2013.01); B29C 47/6093 (2013.01); B29C 47/802 (2013.01); B29C 47/82 (2013.01); B29C 47/822 (2013.01); B29C 47/825 (2013.01); B29C 47/827 (2013.01); B29C 47/92 (2013.01); B01F 2215/0049 (2013.01); B29C 47/0808 (2013.01); B29C 47/0825 (2013.01); B29C 2045/0079 (2013.01); B29C 2045/1722 (2013.01); B29C 2045/605 (2013.01); B29C 2947/92514 (2013.01); B29C 2947/92704 (2013.01);
Abstract

A kneading apparatus for a thermoplastic resin, includes: a plasticizing cylinder which has a high pressure kneading zone and a pressure reduction zone; a screw in the plasticizing cylinder; a downstream side seal mechanism which shuts off communication between the high pressure kneading zone and the pressure reduction zone; and a pressure reduction zone pressure adjusting mechanism which is connected to the pressure reduction zone and which controls a pressure of the pressure reduction zone so that the pressure is not less than an atmospheric pressure and the pressure is not more than a maximum pressure of the high pressure kneading zone that is achieved when kneading a molten resin with a pressurized fluid, when the downstream side seal mechanism shuts off the communication between the high pressure kneading zone and the pressure reduction zone.

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