抄録
This paper deals with a high viscous fluid behavior under the coating head of Melt Transcription Molding Process, which is one of a novel polymer processing recently developed. Flow field analysis of the process is the key issue to determine the optimum process conditions. Thus a simplified experimental apparatus was constructed to model the coating process under iso-thermal condition, and the particle image velocimetry (PIV) was applied to visualize the flow field. The results showed that the flow condition was significantly influenced by the feed rate of the high viscous fluid and the geometry of the die exit. Pressure distribution on the coated surface was also estimated according to the strain rate in the field. Obtained result was compared with the pressure profile experimentally measured, and they showed quantitative agreement. By summarizing these results, optimum conditions to stabilize the coating flow was discussed.
