Pet container for hot filled applications
AssigneeVan Dorn Company
InventorsLawrence E. Garver, Gregory L. Kimbrough
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Abstract
An improved PET container is disclosed which is expressly configured for hot fill applications. The container's body side wall is rigidized against radical and longitudinal vacuum distribution so that paper labels can be applied to the container. In addition, the amorphous threaded mouth of the container is rigidized by gussets molded into the container at the junction of the mouth and body portion of the container to resist deformation when the container is capped. Finally, a bulbous vacuum deformation area in the container is provided adjacent the container mouth.
Claims8
A thermally stable, vacuum compensable PET container suitable for hot fill applications comprising a generally amorphous threaded mouth portion and a highly crystallite cylindrical body portion extending from said mouth portion, said body portion having
- i) a generally frusto-conical neck portion extending from said mouth portion;
- ii) a generally cylindrical side wall portion extending from said neck portion;
- iii) a generally circular end wall portion extending from the opposite end of said generally cylindrical side wall portion;
- iv) vacuum distortion means in said neck portion and said end wall portion to permit container shrinkage when a vacuum is drawn into said container;
- and
- v) rigidizing means in said cylindrical side wall portion preventing radial and longitudinal movement of said side wall when said vacuum is drawn, said rigidizing means including a plurality of radially inwardly extending ring segments and a plurality of cylindrically shaped flat land segments, said radially inwardly extending ring segments longitudinally spaced from one another and contiguously interconnected by said cylindrically shaped flat land segments, said rigidizing means further including a leading land segment generally adjacent said frusto-conical neck portion and a trailing land segment generally adjacent said end wall portion whereby said trailing and leading land segments permit glued application of conventional thickness paper labels to said container while said land segments and said interconnecting ring segments rigidize said cylindrical side wall portion.
Dependencies are inferred from the claim text.