A polymeric container hot-filled with a product and a method for deforming a container and filling the container with a product.

Abstract

METHOD FOR CONTROLLING VACUUM AND PRESSURE WITHIN A THERMOPLASTIC CONTAINER. The present invention relates to a method for forming a container and filling the container with a product. The method includes blow molding and thermosetting the container from a preform and hot filling the container with the product, such that the product occupies about 95% or more of the total internal volume of the container. A headspace volume is defined between a top filling line of the product and an edge of the container. The headspace volume is less than about 5% of the total internal volume of the container. The container is capped and allowed to cool. The container is configured to shrink during cooling, so that the total internal volume decreases by about 0.5% to 1.5%. The base of the container is offset after hot filling and capping to reduce the total internal volume by less than about 0.5% to 4% further.Hot filling, lid placement, cooling, and base displacement create a change in pressure inside the container.

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