HOLLOW RESIN MOLDING AND DIE FOR MANUFACTURING HOLLOW RESIN MOLDING

摘要

PURPOSE: To provide a hollow resin molding of such a structure that a hollow part is reinforced and a die for manufacturing the hollow resin molding. CONSTITUTION: A thick wall region 6 with a reinforcing recessed part 4 is formed in the hollow part 5 of a molding. The recessed part 4 has a partition wall. In addition, protrusions are provided on the opposed cavity facings so that the protrusions are positioned against each other. Further, the tip parts of the protrusions are positioned apart. Thus a die for injection molding using an injected gas is constituted as described above.