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A theoretical melting model for a reciprocating‐screw injection molding machine
Author(s) -
Donovan R. C.
Publication year - 1971
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760110503
Subject(s) - materials science , reciprocating motion , polyvinyl chloride , injection molding machine , extrusion , molding (decorative) , composite material , low density polyethylene , acrylonitrile butadiene styrene , polymer , transient (computer programming) , mechanical engineering , computer science , mold , engineering , gas compressor , operating system
A theoretical model for the transient melting behavior in a reciprocating‐screw injection molding machine is proposed. The model is based on a steady state extrusion model, Neumann's melting problem, and a heuristic postulate for the transient behavior. The model predictions are compared to experimental melting data for low density polyethylene, acrylonitrile‐butadiene‐styrene polymers and polyvinyl chloride for a variety of operating conditions and two screw designs. A useful degree of correlation is demonstrated for all experimental cases.