| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for molding a bottle pack container making it easy to uniformize the building-up of an opening edge and the shape of the opening edge in an opened state when a thin-walled opening part is molded on the leading end surface of a neck part and a mandrel for molding the bottle pack container. SOLUTION: A mandrel 2 wherein the ring-shaped projection 21 for molding an opening part allowed to approach the leading end surfaces of the neck molding parts 31 of two split body molds 3, 3 at a time of the molding of a container 1 and a sleeve like core part 22 inserted into the predetermined gap in the neck molding parts 31 are concentrically provided to the leading end surface of a sleeve like main body 20 in a protruding state is used and, when the opening part 12 of the container 1 is molded, a thermoplastic synthetic resin of a parison (a) forming a neck part 11 is pressed in the leading end direction of the neck molding part 31 from the neck molding part 31 by the core part 22. |
