| 摘要 |
PROBLEM TO BE SOLVED: To form a clearance by bringing up a spray nozzle during blow molding, to circulate air by discharging the air, and to shorten a molding cycle by curtailing a time necessary for cooling. SOLUTION: In a blow circulating molding method for a hollow molding, in blow molding by inserting the spray nozzle (2) into a parison (13), the nozzle (2) is brought up to form the clearance (20) between it and the molding (1), and the air is discharged from the clearance (20) and circulated forcibly in the molding (1) to curtail a cooling time. COPYRIGHT: (C)2003,JPO |
