| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder molding screw in which the improvement of quality and the stable rotation of the screw are attained by providing a seal member in a screw ground outer diameter part in the vicinity of a flight starting position to prevent a powder resin from being leaked and pushed back. SOLUTION: The powder molding screw includes an annular groove (30) formed in the screw ground outer diameter part (9) and the seal member (31) provided in the annular groove (30) and the seal member (31) comes into contact with a cylinder inner diameter part (6a) of a cylinder inner hole (6). COPYRIGHT: (C)2009,JPO&INPIT |
