Method for blow molding plastic articles

In a method of reducing scrap and flash in the formation of a container having a seamless blown container body with an asymmetric configuration and an injection molded finish integral with said body, the method including:

• 1. closing the sections of a sectional pre-form mold onto a thermoplastic parison having an injection molded finish, and forming a tail portion on said parison, said pre-form mold sections, when closed, defining a first mold cavity;
• 2. expanding the parison within said first mold cavity to the configuration of a blowable pre-form body having a shape and size intermediate the shape and size of the parison and the container, said pre-form body including an enlarged bulbous region destined to form a portion of the asymmetric configuration of said container;
• 3. removing the pre-form from the first mold cavity and positioning the pre-form between the sections of a sectional final mold which, when closed, defines a second mold cavity larger than said first mold cavity and conforming to the shape of the blow container body;
• 4. closing said mold sections to engage the tail portion projecting outside of the mold cavity, the remainder of the pre-form body being confined within the second mold cavity to reduce the formation of flash and scrap material;
• and
• 5. expanding said pre-form to the shape of said second mold cavity.