Patent ID: 11883997
Assignee: NISSEI ASB MACHINE CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of manufacturing a neck bent container comprising:
injection molding a preform having a bottomed cylindrical shape, the preform being made of resin,
stretching the preform containing residual heat from the injection molding with a stretching rod; and
blow-molding the neck bent container, in which a central axis of a container neck portion is inclined with respect to an axial direction of a container body portion, by introducing a pressurized fluid into the preform disposed in a mold, wherein
the container body of the neck bent container has a flat shape in which a dimension in a first direction in a container cross section is longer than a dimension in a second direction of the container cross section that is perpendicular to the first direction,
the container neck portion is inclined in the first direction,
in a circumferential cross section of the preform, a thickness of a first region corresponding to a surface extending in the first direction of the container cross section is set to be thicker than a thickness of a second region corresponding to a surface extending in the second direction of the container cross section, and
the thickness of the first region in the axial cross section is set to be thicker on a bottom portion side than an opening side.