Stretch blow molding machine having improved control of the stretch rod
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United States of America Patent
Stats
-
Feb 28, 2006
Grant Date -
Jan 15, 2004
app pub date -
Sep 21, 2001
filing date -
Sep 25, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A machine for making thermoplastic containers by stretching and blowing a preform including at least a stretch rod which is slidably controlled along its axis by an actuator from a retracted position to a stretching position to stretch the preform during the blowing process. When the stretch rod returns toward its retracted position, the actuator is idle, such that the stretch rod is returned by a blowing pressure prevailing inside the container being produced so as to act on a working end of the stretch rod.
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