摘要 |
<p>The present invention relates to a method for manufacturing a cable, said cable comprising at least one transmissive element (3) and at least one coating layer (100) made of a polymeric material and arranged at a radially outer position with respect to the transmissive element (3). The method comprises the steps of: a) feeding the polymeric material to an extrusion apparatus including an extrusion head (1), the extrusion head (1) comprising: a male die (12); a female die (13), coaxially arranged with respect to said male die (12); a conveying channel (20), at least one portion of which being defined between said male die (12) and said female die (13); and b) controlling a cross-sectional area of said at least one portion of the conveying channel (20) in response to a detected quantity, said quantity being caused to vary during the manufacturing of the cable as a function of the actual extrusion speed. The present invention further relates to an extrusion apparatus for carrying out said process.</p> |
申请人 |
PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L.;CASTIGLIONI, WALTER;BALCONI, LUCA;BAREGGI, ALBERTO;BELLI, SERGIO |
发明人 |
CASTIGLIONI, WALTER;BALCONI, LUCA;BAREGGI, ALBERTO;BELLI, SERGIO |