Glass container forming machine
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United States of America Patent
Stats
-
Mar 16, 2004
Grant Date -
Jun 5, 2003
app pub date -
Dec 5, 2001
filing date -
Dec 5, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A blow mold assembly for an I.S. machine for blowing a parison of glass and cooling the blown parison into a formed bottle which can be removed from the blow mold. A blow head is lowered onto a blow mold and final air is applied. The blow head is lifted a selected vertical distance above the top surface of the blow mold to an exhaust position allowing cooling air to escape from the blow mold. The selected vertical distance is selected so that at least a minimum pressure will continue within the formed bottle. The blow head is maintain at the exhaust position for a predetermined time and then retracted. A first pressure is applied while the blow head is at the lowered position and a higher pressure is applied while the blow head is at the escape position.
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