Multi-layer parison, multi-layer bottle and apparatus for and method of manufacturing parison and bottle

摘要

Each of a multi-layer parison and a bottle formed from the parison has a nine-layer structure including five heat resistant resin layers at their mouth portions. The parison is formed by a hot runner nozzle capable of polyester resin and heat resistant resin at the same time. The bottle is formed by a stretching blow molding apparatus in which the parison is set, the apparatus having a passage for heated and compressed air and a passage for cooling fluid.