HOLLOW CONTAINER MANUFACTURING METHOD, DIE, AND ROTARY BLOW MOLDING MACHINE

摘要

Provided is a hollow container manufacturing method that, in rotary blow molding in which parison in a molten state is continuously supplied on a plurality of pairs of dies in a circumferential direction, makes it possible to perform continuous molding of individually-separated hollow containers.　The present invention provides a hollow container manufacturing method. The hollow container manufacturing method has a rotary blow molding step. In the rotary blow molding step, a plurality of pairs of dies are arranged to be continuous in a concentric annular shape, parison in a molten state is continuously supplied on the plurality of pairs of dies in the circumferential direction, the plurality of pairs of dies are successively closed, pressurized fluid is introduced in the parison, the parison is expanded along cavities of the dies, a pinch-off part is bitten off by die closure to individually separate the hollow containers, the plurality of pairs of dies are successively opened thereafter, the individually-separated hollow containers are take out one by one, and the containers are conveyed to the next step.