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Simulation of injection‐compression molding for optical media
Author(s) -
Fan Bingfeng,
Kazmer David O.,
Theriault Richard P.,
Poslinski Andrew J.
Publication year - 2003
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.10048
Subject(s) - materials science , mold , molding (decorative) , compression molding , polycarbonate , transfer molding , isothermal process , finite element method , composite material , compressibility , displacement (psychology) , computer simulation , mechanical engineering , mechanics , structural engineering , thermodynamics , engineering , psychology , physics , psychotherapist
A numerical simulation of a coining type of injection‐compression molding is developed. A hybrid finite element/finite difference method is employed to model the temperature and pressure fields of the process using a non‐isothermal compressible flow model. Simulation results for CD‐R molding with respect to injection pressure and mold displacement are compared with experimental observations using an optical grade of polycarbonate. The simulation shows similar trends as experimental observations on the dependence of various processing parameters such as melt temperature, mold temperature, and packing pressure. However, the mold displacement measurement does not show the effect of punch delay time as does the simulation, and needs further investigation.