Extrusion apparatus for manufacturing a product made of different raw rubber mixtures and extrusion process to form a complex profiled product consisting of at least two different rubber mixtures

摘要

The proposed extruder (extrusion apparatus) carries out an extrusion of the roll-head type onto a cylindrical roll 7 associated with a profiled fixed wall 5 and a second extrusion of the roll-head type onto a profiled roll 8 and an associated fixed wall 6, and then coating by superposition in the nip between the rolls 7 and 8. IMAGE