Patent Number: 6,296,464

Title: Calibrating device with at least one calibrating die

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.

Inventors: Purstinger; Franz (Traun, AT)

Assignee: C. A. Greiner & Sohne Gesellschaft m.b.H.

International Classification: B29C 47/90 (20060101); B29C 047/90 ()

Expiration Date: 10/02/2018