초록 ▼

A method for producing a biaxially oriented, heat set plastic container, including the steps of providing a plastic preform within a mold cavity; expanding and stretching the plastic preform into conformity with the surfaces defining the mold cavity to form a biaxially oriented plastic container; in

A method for producing a biaxially oriented, heat set plastic container, including the steps of providing a plastic preform within a mold cavity; expanding and stretching the plastic preform into conformity with the surfaces defining the mold cavity to form a biaxially oriented plastic container; inducing crystallinity in the plastic container by using convection heat transfer to heat a surface of the plastic container to a temperature of at least 120.degree. C.; and removing the plastic container from the mold cavity. The PET containers produced by the method have an average sidewall crystallinity greater than about 30%, which allows the PET container to maintain its material integrity during any subsequent pasteurization or retort process of the contents in the PET container, and during shipment of the PET container.

대표청구항 ▼

1. 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

1. 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.degree. C., wherein said inducing step includes circulating a high-temperature fluid at a pressure in the range of 100 psi to 600 psi through said interior portion of the plastic container.