Calibrating device with at least one calibrating die
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United States of America Patent
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-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Apr 16, 1999
filing date -
Apr 27, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a calibrating device with at least one calibrating die (24), which has die faces (66) against which an extruded object fed therethrough is applied, in particular a section having several cavities, a sealing device (60, 62) being provided to seal off a gap (56) in order to form a cavity (59) and, having been formed, this cavity (59) is evacuated to a negative pressure lower than the ambient pressure, means being provided to form the gap (56) before the first end face (53) of the calibrating die (24) and at least one of the terminal edges (67) of the die faces (66) having part end faces (76) to form the gap (56) with a gap width (65) smaller than 1.0 mm.
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