EXTRUSION METHOD AND APPARATUS FOR PRODUCING A CABLE

摘要

An extrusion apparatus for producing a cable. The apparatus includes an extrusion head having a male die, an intermediate die and a female die; a longitudinal cavity for receiving the core defined in the male die; a pair of feeding channels defined in the extrusion head for depositing by co-extrusion, respectively, at least one coating layer of polymeric material and one coating layer of expanded polymeric material; and a plurality of suction channels for sucking gases released during the expansion of the coating layer of expanded polymeric material.