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Plastic shaping by means of IR heating and direct pellet molding
Author(s) -
Quadrini Fabrizio,
Santo Loredana,
Tagliaferri Vincenzo,
Trovalusci Federica
Publication year - 2006
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.20539
Subject(s) - materials science , polypropylene , pellet , composite material , thermoplastic , acrylonitrile butadiene styrene , molding (decorative) , low density polyethylene , high density polyethylene , mold , polyethylene
Abstract Plastic shaping was performed by means of the combination of IR heating and pellet softening in a semitransparent open mold. Three commercial thermoplastic materials were employed (acrylonitrile‐butadiene‐styrene, polyethylene, and polypropylene) and process curves were extracted depending on IR lamp power and interaction time. A simple exponential model was defined for the prediction of molded sample thickness and a master curve was built for all the materials. A scale factor was introduced depending on the IR lamp power and not on the material. Besides, the density of molded sample was monitored, obtaining in such conditions density values comparable to typical injection molded ones, even if a very low load was applied during pellet molding (10 N). POLYM. ENG. SCI., 46:896–903, 2006. © 2006 Society of Plastics Engineers