Doubling machine
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United States of America Patent
Stats
-
Sep 15, 1987
Grant Date -
N/A
app pub date -
Sep 3, 1986
filing date -
Sep 13, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heat-insulating jacket extends around each rotating can of a doubling machine. Half way up the height of the can envelope surface, an extraction line for extracting the air heated by friction as the can rotates extends into the interior between the jacket and the can. The end-face boundaries of the rotating can and/or top and bottom closure members of the jacket are such that the pressures of the air drawn into the jacket are at least substantially equal at the top and at the bottom.
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