Device for cooling a foil tubing
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United States of America Patent
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-
Jan 5, 1988
Grant Date -
N/A
app pub date -
Apr 22, 1986
filing date -
Sep 7, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for cooling foil tubing as it issues from an annular nozzle surrounded by an annular air outlet orifice. A first cylindrical chamber is connected in the direction of the course of the foil tubing to the air outlet orifice, and has an iris diaphragm at its upper end. The air flowing into the chamber flows out between the inner rim of the diaphragm and the foil tubing. At least one first additional chamber is connected to the first chamber at the other side of the iris diaphragm. The additional chamber has a first additional iris diaphragm at its upper end which has an adjusting mechanism independent of the iris diaphragm at its upper end of the first chamber. The walls of both chambers are constructed of solid material.
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