Polymer Engineering Faculty Research
Title
Primary and secondary gas penetration during gas-assisted injection molding. Part I: Formulation and modeling
Document Type
Article
Publication Date
Fall 2004
Abstract
A theoretical study has been carried out on the transient gas-liquid interface development and gas penetration behavior during the cavity filling and gas packing stage in the gas-assisted injection molding (GAIM) of a tube cavity. A mathematical formulation describing the evolution of the gas/melt interface and the distribution of the residual wall thickness of skin melt along with the advancement of gas/melt front is presented. The physical model is put forward on the basis of Hele-Shaw approximation and interface kinematics and dynamics. Numerical simulation is implemented on a fixed mesh covering the entire cavity. The model and simulation can deal with both primary and secondary gas penetrations. The predicted and measuredresults are compared in Part II of this study to validate the theoretical model.
Volume
44
First Page
983
Last Page
991
Recommended Citation
Isayev, Avraam, "Primary and secondary gas penetration during gas-assisted injection molding. Part I: Formulation and modeling" (2004). Polymer Engineering Faculty Research. 33.
https://ideaexchange.uakron.edu/polymerengin_ideas/33