Apparatus for producing hot gas for the shrinkage of synthetic resin foils
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United States of America Patent
Stats
-
Oct 31, 1989
Grant Date -
N/A
app pub date -
Mar 14, 1988
filing date -
Mar 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rectangular cross-section housing is provided for an apparatus generating hot gas to shrink a plastic film. A burner is located close to the upper small end of this housing while an outlet nozzle is provided at the lower small end and the gas flows at an obtuse angle from the burner to the outlet. The burner is flanked by lamellae and a venturi action draws cool air between the lamellae and the burner, additional cool air passing between the lamellae and the vertical housing walls. Cold-air nozzles are provided within the housing as well.
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