| 摘要 |
PROBLEM TO BE SOLVED: To surely exhaust a gas from a hollow part of a molded hollow resin molded product by a method wherein resin covering a tip part of a nozzle is surely dispersed to form a through hole allowing the gas to flow out or in, and the through hole is utilized. SOLUTION: A gas nozzle 10 comprises a first sleeve pin 11 fixed to a molding die 25, a second pin 12 incapable of being transferred by being coaxially inserted into the first sleeve pin 11, and a core pin 13 incapable of being transferred by being coaxially inserted into the second sleeve pin 12. A first gas flowing passage 16 communicating to a cavity 26 is provided between the first sleeve pin 11 and the second sleeve pin 12. A second gas flowing passage 18 communicating to the cavity 26 is provided between the second sleeve pin 12 and the core pin 13. The second gas flowing passage 18 is positioned correspondingly adjacent to inward in a radial direction of the first gas flowing passage 16.
|
