WERKWIJZE EN INRICHTING VOOR HET EXTRUDEREN VAN THERMOPLASTISCHE SAMENSTELLINGEN.

摘要

Disclosed is an apparatus for extruding thermoplastic compositions, comprising an extruder; a cooling device positioned downstream of the extruder for cooling the heat plastified thermoplastic resinous composition exiting from the extruder to a uniform temperature desired for extrusion through an extrusion die, the cooling device including at least one enclosed flow path for conveying the resinous composition from the inlet of the cooling device to the outlet of the cooling device, structure for circulating a cooling medium about the entire circumference of each of the resin flow paths and a device for maintaining a hydraulic balance between the inlet and the outlet of the cooling means across the entire cross-section of each of the resin flow paths; and an extrusion die positioned downstream of the cooling device.