| 摘要 |
<p>A process for making a one-piece plastic container of the champagne base variety having an annular peripheral chime (20) surrounding an inward sloping base portion for containing carbonated beverages comprising the steps of forming the preform on a core rod with annular thickened portions of the preform positioned at points along the length thereof such that during blowing of the preform the material of the preform will be deposited where desired; positioning the preform within a blow molding cavity defining the finished container shape; extending a stretch rod (50) within the preform towards the bottom of the blow molding cavity, prior to injection of pressurized gas, to longitudinally stretch a sidewall-forming portion of the preform while minimizing the stretching of a base-forming portion thereby inducing the base-forming portion to lay down where desired when injected with pressurized gas; and injecting pressurized gas into the preform adjacent the neck whereby the preform is radially stretched outward to fill the cavity and form the container from the neck towards the base. <IMAGE></p> |
