Bottles and jars – Sidewall structure – Pressure-responsive structure
Patent
1995-07-17
1999-06-01
Castellano, Stephen
Bottles and jars
Sidewall structure
Pressure-responsive structure
215382, 220721, 220675, B65D 102
Patent
active
059081287
ABSTRACT:
A pasteurizable plastic container having movable panels to alleviate internal pressure changes during pasteurization in order to avoid uncontrolled permanent deformation of the container body. As molded, each panel has a shallow recessed central wall which during the increased temperature and pressurization of pasteurization, moves outwardly to alleviate at least part of the internal pressure. During cooling, the panels move back inwardly to alleviate at least part of the negative pressure. The container may further include hoop ribs in the land areas above and below the panels, an axially elongatable hoop rib in an upper shoulder section, and an angled heel portion adjacent the standing ring. These additional elements further restrict uncontrolled bulging of the post walls, which would lead to improper label application and/or excessive volume change.
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Collette Wayne N.
Krishnakumar Suppayan M.
Piccioli David
Castellano Stephen
Continental PET Technologies Inc.
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