Pressure container with differential vacuum panels
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United States of America Patent
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Oct 20, 2015
Grant Date -
Jun 28, 2012
app pub date -
Jan 24, 2012
filing date -
Sep 30, 2004
priority date (Note) -
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Abstract
An improved blow molded plastic container having generally rounded sidewalls that are adapted for hot-fill applications has two adjacent sides and two pairs of controlled deflection panels, each pair reacting to vacuum pressure at differing rates of movement, whereby one pair inverts under vacuum pressure and the other pair remains available for increased squeezability or extreme vacuum extraction. The opposing sidewalls are symmetric relative to vacuum panel and rib shape and placement. The ribs and controlled deflection panels cooperate to retain container shape upon filling and cooling and also improves bumper denting resistance, decreases vacuum pressure within the container, and increases light weight capability.
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