MOLDING OF HOLLOW MOLDED PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a molding method adaptable even to a large-sized hollow molded product and capable of shortening the cooling time of a hollow molded product to be produced as compared with a conventional cooling time by a simple device without damaging the reliability of the appearance or strength of the hollow molded product. SOLUTION: A fluid is introduced into the synthetic resin parison 6 within a mold cavity from the fluid introducing pin 10 allowed to pierce the parison from the outside to shape and cool the parison 6 and, in parallel to or after shaping and cooling, the fluid is discharged by the fluid discharge pin 14 allowed to pierce the parison 6 within a mold cavity 9a or the hollow molded product after shaping from the outside.