Molded plastic container with reduced neck ovality

摘要

A plastic container has a main body portion, a neck portion and a molded feature such as an anti-rotation lug adjacent to the neck portion. The molded feature has a volume that is less than a volume that would be defined by the maximum external dimensions of the feature. This reduces the shrinkage differential between the molded feature and the neck portion, which could otherwise cause sealing problems with a closure as a result of deformation of the neck portion. A method of correcting a sealing problem in a plastic container by reducing the volume of the molded feature is also disclosed.

主权项

1. A plastic container, comprising:
a main body portion having an inner surface that defines an interior space; a neck portion having an opening that is in communication with the interior space; and a molded feature that is adjacent to the neck portion, the molded feature having a space defined therein so that the molded feature occupies a volume that is less than a volume defined by the maximum external dimensions of the molded feature, the molded feature having a first portion that is integral with the neck portion and a second portion with a cavity to define the space of the molded feature therein, wherein the molded feature has a generally triangular shape when viewed in side elevation and is configured to reduce distortion of the neck portion as a result of differential cooling during a fabrication process.