| 摘要 |
PROBLEM TO BE SOLVED: To prevent burning, yellowing, or the formation of a black spot by roughening the surface of a channel part in advance by a sand blasting method and forming a carbonized film. SOLUTION: In a resin molding method and a resin molding screw, the surface roughness (9) of the channel parts (7) of a compression zone (5) and a metering zone (6) is formed by roughening in advance by the sand blasting method so that an insulating layer by the carbonized film is formed in the channel part (7) to prevent the burning, the yellowing, or the formation of the black spot. COPYRIGHT: (C)2006,JPO&NCIPI |
