Plastic fuel tank production method, comprises positioning balloon-shaped preform inside second, cylindrical preform within blow mould, molding first preform to shape and then expanding second preform

摘要

Production method for plastic fuel tanks comprises positioning a balloon-shaped preform (16) inside a second, cylindrical preform (14) within a blow mould (12). The first preform is molded to shape and then the second preform is expanded so that its outer surface is in contact with the inner surface of the first preform.