APPARATUS AND METHOD OF CORRECTING BOW IN A HONEYCOMB EXTRUDATE

摘要

Apparatus and a method for extruding a honeycomb, providing correction in bowing of the extruded honeycomb structure, employs a deflector device (10) having a slide plate (14) and a base plate (12) including an aperture aligned in a direction parallel to the extrusion axis through which plastic material is conveyed to an extrusion die (30). The base plate (12) aperture having a varying diameter with the slide plate (14) movably mounted to the base plate (12).The deflector device (10) is positioned upstream of the extrusion die with the degree of bow reduction depending upon adjustment of the diameter of the aperture via the slide plate (14) thereby imparting a pressure drop gradient on the flow stream entering the extrusion die (30).