| abstract |
(57) [Abstract] [Problem] Low molecular weight substance in pet, small amount of residual organic solvent, high transparency, and molded product excellent in low dust useful for optical grade and transparent parts for automobiles. Provided is a polycarbonate resin molding material that imparts When a polycarbonate resin powder is melt-extruded and pelletized, one vent opening has a vent having a vent opening whose length is 2 to 15 times the screw diameter. Use an extruder. |