Method for the stretch-blowing of a container, comprising a retraction of the stretch rod during a boxing operation
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United States of America Patent
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Jun 27, 2017
Grant Date -
Jul 24, 2014
app pub date -
Apr 30, 2012
filing date -
May 19, 2011
priority date (Note) -
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Abstract
A method of manufacturing a container from a blank in a stretch blowing assembly equipped with a mold provided with a wall and a mold bottom axially movable between an extended position and a retracted position and a stretch unit having a rod axially movable with respect to the wall and a device for controlling the movement of the rod. The method involves a stretch blowing phase; a boxing phase during which the mold bottom, initially in the extended position, is moved towards its retracted position, the boxing phase having a retraction operation including controlling a movement of the rod in synchronization with the movement of the mold bottom, or releasing the rod to allow the free axial movement thereof.
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