IMPROVED HOT-FILL TYPE PLASTIC CONTAINER AND METHOD OF MAKING

摘要

An improved hot-fill type container that has particular utility for use with the nitrogen dosing hot-fill process includes a finish portion, a main body portion and a base portion having a pushup area and a chime that is situated about the pushup area for supporting the container when a horizontal surface. The container advantageously includes a reinforced heel portion in the area between the main body portion and the chime for protecting the container againts deformation that could otherwise be caused by the positive pressurization of the nitrogen dosing process. The heel portion is generally convex and is formed of at least two radius areas, with a lower radiused area having a smaller radius than an upper radius area. In addition, a lower region of the heel portion preferably is reinforced with an increased sidewall thickness with respect to the average sidewall thickness of the main portion and upper regions of the heel portion. A method of making such containers is also disclosed.