发明名称 |
INJECTION MOLDING APPARATUS |
摘要 |
<p>An injection molding apparatus is of the screw in-line type and has a screw (1) rotationally and axially movable in an extrusion cylinder (2), and is used for injection-molding a high-nitryl resin. The screw (1) has the following features, namely a compression ratio set to a value of 1.8 to 2.5; lengths of the feed, compression, and metering sections set in the ratios of [1 to 1.5] : [1.8 to 2.8] : [1]; a depth T (unit:mm) of the groove, in the metering section, between its flight (1b) and the diameter D (unit: mm) of its cylindrical shaft (1a) set to T >/= 0.057D - 0.2; and a radius of curvature R (unit:mm) of the arcuate surface (1c) at a rear corner portion which is formed between the screw shaft (1a) and a flight (1b), in relation to the inner diameter D (unit: mm) of cylindrical shaft, set to R >/= 0.36D + 2.0.</p> |
申请公布号 |
EP0397497(B1) |
申请公布日期 |
1993.09.29 |
申请号 |
EP19900305049 |
申请日期 |
1990.05.10 |
申请人 |
MITSUI TOATSU CHEMICALS, INC.;KABUSHIKI GAISHA TOKAI |
发明人 |
AMEMIYA, HIDEO;KURODA, MINORU;NITTA, TOMIO |
分类号 |
B29C45/50;B29C45/60;B29K33/18;B29K79/00 |
主分类号 |
B29C45/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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