METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION PELLET, EXTRUDER, AND DIE PLATE

摘要

Provided is a technology to prevent drawbacks such as the decrease in product quality, the disturbance of stable molding, etc., caused by resin residue attached and accumulated near a discharge hole of a die plate for an extruder. An extruder is provided with a die plate comprising a discharge hole capable of discharging a material in a strand shape, and a first gas blowing part which blows gas to the discharged strand-shaped material, and the extruder is used to mold a thermoplastic resin composition in a molten state. More specifically, the first gas blowing part blows the gas to at least a part on a border line between the extruded strand-shaped material and the upper portion of the opening. Further, in the die plate, the shortest distance, on the discharge surface of the die plate, from the lower end of the opening of the discharge hole to the outer periphery of the die plate is 2 mm to 5 mm inclusive.