Manufacturing method of resin container, injection core type, injection mold and manufacturing apparatus of resin container

摘要

Problem to be solved: to provide a method of manufacturing a resin container capable of appropriately releasing the preform even in the short molding cycle time, and capable of producing a container made of good quality resin.Injection core type 102 isThe body of the body part 320 of the preform 300 has a body part defining part 122 which defines the shape of the body partTemperature type core typeIn the pinching step, it has a body contact portion contacting the body portion 320 of the preformThe center line average roughness ra1 in the circumferential direction D2 of the surface of the body portion defining portion 122 of the injection core 102 isIt is larger than the center line average roughness ra2 in the circumferential direction of the surface of the body contact portion of the temperature controlled core type.Diagram