Dies for manufacturing extruded parts including a plurality of channels and processes for manufacturing these dies

摘要

The subject of the present invention is dies for manufacturing extruded parts including a plurality of channels and processes for manufacturing these dies. A die according to the invention includes a plurality of elongate elements 9, the number of which corresponds to that of the channels of the part, which are placed in an injection nozzle 12. Each elongate element includes, on the outlet side, a first section 9a, the cross-section of which corresponds to that of a channel and on the side of the inlet, a second section 9b of smaller cross-section, which is connected to the section 9a via inclined walls 9c. The ends of all the sections 9b are fixed to an inlet plate 8, so that the cross-sections for passage of the pasty material decrease from the inlet towards the outlet of the die. One application is the extrusion of filtration or ultrafiltration cartridges made from porous ceramic. IMAGE