Title:
SCREW FOR FOAM MOLDING
Document Type and Number:
Japanese Patent JP2007320718
Kind Code:
A
Abstract:
To prevent leakage of a decomposed gas and to easily deal with various kinds of resins.
The screw for foam molding has a screw body 23 comprising a screw shaft 21 and a flight 22. A feed part, a compression part and a measurement part are successively formed in an axial direction of the screw body 23. Each of the feeding part, the compression part and the measurement part is formed by one or more segments 31-37. The respective segments 31-37 have a central hole 24 for axially movably penetrating a central shaft 25. The gas leakage prevention flight part 43 having a smaller pitch P than an outer diameter D of the flight 22 is provided on the segment 32 forming the feed part.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
WADA ATSUSHI
Application Number:
JP2006153307A
Publication Date:
December 13, 2007
Filing Date:
June 01, 2006
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
B65G33/14
Domestic Patent References:
| JP2005014272A | 2005-01-20 | |||
| JPH0976311A | 1997-03-25 |
Attorney, Agent or Firm:
Norihiko Hibi
Einosuke Kishimoto
Akira Watanabe
Kiyosue Yasuko
Einosuke Kishimoto
Akira Watanabe
Kiyosue Yasuko
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