Title:
POWDER RESIN EXTRUDER AND EXTRUSION METHOD USING THE SAME
Document Type and Number:
Japanese Patent JP3701392
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance extrusion efficiency without generating the mixing with a non-molten resin or vent-up by constituting the screw of the first kneading zone of a biaxial rotary extruder by a combination of two kinds of kneading discs respectively specified in nondimensional pressure gradient.
SOLUTION: A powdery resin extruder is set to a biaxial rotary type obtaining sufficient feed force to a powder resin and the screw constitution of a first kneading zone is composed of a combination of kneading discs A, B. In the kneading disc (A), a ratio L/D of the length L and diameter D thereof is set to 0.5-2 and the nondimensional pressure gradient at a time of 0.01 in nondimensional extrusion quantity is set to 0-10. In the kneading disk (B), nondimensional pressure gradient at a time of 0.01 in nondimensional extrusion quantity is set to 0-1,000. By this combination, proper kneading pressure is obtained and extrusion efficiency can be enhanced without generating trouble.
Inventors:
Yoshio Daejeon
Hiroaki Ota
Hiroaki Ota
Application Number:
JP18531396A
Publication Date:
September 28, 2005
Filing Date:
June 27, 1996
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation
International Classes:
B29B7/48; B29C48/57; B29B9/10; B29C48/39; B29C48/535; B29K71/00; (IPC1-7): B29C47/40; B29B7/48; B29B9/10; B29C47/64
Domestic Patent References:
| JP6068816U | ||||
| JP5237914A | ||||
| JP6143388A | ||||
| JP7060819A | ||||
| JP7112436A | ||||
| JP5086284A | ||||
| JP5163401A | ||||
| JP6122771A |
Attorney, Agent or Firm:
Keisuke Watanabe
Yoshihiro Yamaguchi
Yoshihiro Yamaguchi
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