PREFORMED OBJECT AND HEAT-RESISTANT BOTTLE

摘要

PURPOSE:To prevent the separation of an insert member from a mouth part and to provide good heat resistance to the mouth part. CONSTITUTION:In a preformed object consisting of a mouth part 11 having a screw thread part 15a and a support ring part 14, a body part 12 and a bottom part 13, an annular insert member 15 composed of a heat-resistant material is integrally provided to the outer peripheral part of the mouth part 11 and the inner surface of the insert member 15 is formed into a tapered surface expanding upwardly. At least one rotation stop member composed of a planar part extending in the peripheral direction of the insert member 15 is provided to the inner surface of the insert member 15.