Thananchai Leephakpreeda

pp. 385 - 391

Abstract

This paper presents an approach for dynamic control of crystallinity in polymer film casting process.
As known, the transients of crystallization dictate the microstructures of semi-crystalline polymer during
solidification. In turn, the properties of finished products can be determined by adjustable variables in polymer film casting process such as temperature of chill roll. In this work, an experimental model of the solidification in film casting process is derived by a system identification technique. This model is used to design a
digital feedback controller including a state estimator. The simulation results show the effectiveness of the
proposed control technique on an extruded film.