TY - GEN
T1 - Study on the flow situations of lightguiding plates by micro injection molding
AU - Huang, Chiung Fang
AU - Lin, Yi
AU - Shen, Yung Kang
PY - 2011
Y1 - 2011
N2 - This study investigates the flow characteristics of microinjection-molded lightguiding plates. This study also analyzes the position of melt fronts on lightguiding plates. Viscous heating, temperature and velocity distribution are utilized to analyze delay or advancement of the melt front experimentally and using three-dimensional (3D) numerical simulation. A slow injection speed reduces viscous heating. As viscous heating decreases, the temperature distribution decreases and plastic viscosity increases. A high plastic viscosity increases flow resistance and melt plastic velocity decreases. The advancing melt front of a lightguiding plate is delayed in this situation. The key of this research is that the plastic melt front can arrive the end position at the same time on filling stage of lightguiding plate for microinjection molding. In this research, the authors find increasing the injection speed can help the previous situation. Experimental results demonstrate that filling in the experiment is very close to that in 3D numerical simulation.
AB - This study investigates the flow characteristics of microinjection-molded lightguiding plates. This study also analyzes the position of melt fronts on lightguiding plates. Viscous heating, temperature and velocity distribution are utilized to analyze delay or advancement of the melt front experimentally and using three-dimensional (3D) numerical simulation. A slow injection speed reduces viscous heating. As viscous heating decreases, the temperature distribution decreases and plastic viscosity increases. A high plastic viscosity increases flow resistance and melt plastic velocity decreases. The advancing melt front of a lightguiding plate is delayed in this situation. The key of this research is that the plastic melt front can arrive the end position at the same time on filling stage of lightguiding plate for microinjection molding. In this research, the authors find increasing the injection speed can help the previous situation. Experimental results demonstrate that filling in the experiment is very close to that in 3D numerical simulation.
KW - Lightguiding plate
KW - Melt front
KW - Microinjection molding
KW - Viscous heating
UR - http://www.scopus.com/inward/record.url?scp=79960439601&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960439601&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.268-270.123
DO - 10.4028/www.scientific.net/AMR.268-270.123
M3 - Conference contribution
AN - SCOPUS:79960439601
SN - 9783037851555
T3 - Advanced Materials Research
SP - 123
EP - 128
BT - Computational Materials Science, CMS 2011
T2 - 2011 International Conference on Computational Materials Science, CMS 2011
Y2 - 17 April 2011 through 18 April 2011
ER -