Two-stage HDPE preform and container with low axial stretch ratio

Abstract

A method for forming a container from a high-density polyethylene preform by one-stage or two-stage injection stretch blow molding. The method includes inserting the preform into a mold. The preform has an axial length. The method further includes blow molding the preform within the mold to form the container, including stretching the preform to form the container with an axial length that is 1.0–1.7 times greater than the axial length of the preform, and with a circumferential diameter that is 1.6–2.25 times greater than the circumferential diameter of the preform.