Patent ID: 11931947
Assignee: NISSEI ASB MACHINE CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. A method for manufacturing a resin container, the method comprising:
injection-molding a bottomed preform made of resin;
adjusting a temperature of the injection-molded preform while cooling the preform; and
blow-molding the temperature-adjusted preform to manufacture a resin container,
wherein the injection-molding includes filling a cavity formed by at least an injection core mold and an injection cavity mold with a molten resin to form the preform,
wherein the injection core mold includes a body portion defining portion configured to define a shape of a body portion of the preform,
wherein the temperature adjustment includes sandwiching the preform between a temperature adjustment cavity mold and a temperature adjustment core mold,
wherein the temperature adjustment core mold includes a body portion contact portion in contact with the body portion of the preform during the sandwiching, and
wherein a center line average roughness Ra1 of a surface of the body portion defining portion of the injection core mold in a circumferential direction is larger than a center line average roughness Ra2 of a surface of the body portion contact portion of the temperature adjustment core mold in a circumferential direction.