Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1981-05-06
1985-02-05
Kittle, John E.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
215 1C, B65D 102
Patent
active
044978553
ABSTRACT:
A collapse resistant polyester container is provided for hot fill applications employing product fill temperatures up to about 190.degree. F. (87.8.degree. C.) or more. The container has at least one region which is thermoelastically deformable inwardly after the container is hot filled and sealed to offset the pressure forces which tend to collapse the container as the contents cool and create an internal vacuum. The thermoelastic region is preferably formed in a two step molding process in which the region is formed and heat set at a first position and then reformed outwardly to a second position and cooled in that position.
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Agrawal Purushottam D.
Mandell John F.
Kittle John E.
Limpus Lawrence L.
Monsanto Company
Murphy Michael J.
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