Flow of Rubber Compounds in a Plasticating Unit of a Reciprocating-screw Injection Molding Machine
1987; De Gruyter; Volume: 2; Issue: 2 Linguagem: Inglês
10.3139/217.870102
ISSN2195-8602
AutoresR. Brzoskowski, James L. White,
Tópico(s)Epoxy Resin Curing Processes
ResumoAbstract An experimental study of the distribution of material and internal flow patterns in the cold feed screw injection molding machine for rubber compounds is presented. Experimental studies are carried out by vulcanizing rubber compounds in the screw of the plasticating unit at various positions in the molding cycle. The screw is then removed and the rubber strip unwound from the flights. It is found that transverse flow patterns begin at the feed port and proceed down the channel. Various kinds of starvation behavior are observed especially at low back pressures and with narrow feed strips.
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