Blow molding method for producing pasteurizable containers

A method of producing a heat set plastic container comprising the steps of:

• providing a plastic preform within a mold cavity;
• expanding and stretching said preform into conformity with surfaces defining said mold cavity;
• and
• inducing crystallinity in the plastic container by applying heat from an interior portion of the plastic container to an interior surface of the plastic container to raise a temperature of said interior surface to at least 120° C., wherein said inducing step includes circulating a high-temperature fluid into, out of and through said interior portion of the plastic container.

A method of producing a heat set plastic contained comprising the steps of:

• providing a plastic preform within a mold cavity;
• expanding and stretching said preform into conformity with surfaces defining said mold cavity;
• and
• inducing crystallinity in the plastic container by applying heat from an interior portion of the plastic container to an interior surface of the plastic container to raise a temperature of said interior surface to at least 120° C., wherein said inducing step includes circulating a high-temperature fluid through said interior portion of the plastic container, and wherein said circulating of said high-temperature fluid includes introducing said high-temperature fluid into the plastic container while also exhausting said high-temperature fluid from the plastic container.