Abstract
Extrusion experiments for pruned branches from fruit tree were conducted at a uniform press speed. The results obtained in the present study are as follows. Molding defects were observed for all experimental conditions. The size of cracks on the molding increases with an increase in press speed. The dynamic equilibrium load in the range of press speed between 0.1 and 10mm/min. was denoted as a power function with press speed. In the case of capillary diameter of 2mm, bursts in extrusion processes occurred due to production of thermal decomposition gas.
