| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of processes while avoiding the biting-in of a primary molded product due to a mold. SOLUTION: An injection molding part 200 and a primary molding part 300 are formed by injection molding and a slide core 10 is subsequently replaced with a blow mold 3 while a discharge port 24 is opened by moving an intermediate core 2 to press the primary molding part 300 to the blow mold 3 to form a bellows part 301 by blow molding. By performing injection molding and blow molding continuously, the number of processes can be sharply reduced as compared with a case for performing the whole by injection molding. Since it is unnecessary to transfer a primary molded product to a blow mold, a molding cycle can be shortened and, since the blow mold 3 is only slid and moved, the biting-in of a primary molded product due to a mold can be avoided. COPYRIGHT: (C)2006,JPO&NCIPI |
