Experimental Study of Extruding Behavior against Material Property in the Filler Mixing by Intermeshing Co-Rotating Twin Screw Extruder (II)

Abstract

Plastics mixed with mineral fillers are extensively used in various fields. Co-rotating twin screw extruder are generally used as a compounder for mixing plastics with filler. In ANTEC '96, we presented the study about the feeding system which supplies resin and filler together in the filler compounding by co-rotating twin screw extruder (hereinafter TSE) [1].

The present study investigated extruding behavior in the side-feeding system of filler compounding by TSE. This study verified by experiment how the MFR of polypropylene (hereinafter PP), the particle size and the mixing ratio of talc influence on the extruding capacity. Results of experiment indicated that the higher mixing ratio and the smaller particle size of talc made throughput rate lower. On the other hand, difference in the MFR of PP was found to have a little influence. Amount of the air contained in the talc was found to have great influence on the throughput rate.

Keywords

twin screw extruder talc side-feeding filler compounding

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References

1. Ishibashi, J. , A. Kobayashi , T. Yoshikawa and K. Shinozaki . 1996. "Experimental Study of Extruding Behavior against Material Property in the Filler Mixing by Intermeshing Co-rotating Twin Screw Extruder," SPE ANTEC '96.

2. Japanese patent publication H-2-1650, Toshiba Machine Co., Ltd.,(in Japanese).