公开(公告)号：US20240127984A1

公开(公告)日：2024-04-18

申请号：US18231231

申请日：2023-08-07

Applicant: NEXANS

Inventor： Tarik SADIK ,  Stephan PUISSANT ,  Gabriele PEREGO

IPC: H01B13/14

CPC classification number: H01B13/147 ,  H01B13/148

Abstract: An extruder (5) for extruding an electric cable has an extrusion screw (7) arranged inside a barrel (6) and making it possible for the polymer to melt gradually in order to form an extrusion composition and for this composition to be transported along the extrusion screw (7). An extrusion head (8) is arranged at a distal end (21) of the extrusion screw (7) and configured to apply the composition around an elongated electrically conductive element. The at least one liquid injection channel (22) is formed through the barrel (6), the at least one injection channel (22) having at least one outlet orifice (30) emerging in a zone of the extrusion screw (7) in which the thermoplastic polymer is at least partially in the solid state.

公开(公告)号：US20240127985A1

公开(公告)日：2024-04-18

申请号：US18231238

申请日：2023-08-07

Applicant: NEXANS

Inventor： Tarik SADIK ,  Stephan PUISSANT ,  Mauro CACCIOTTI ,  Marie-Hélène LUTON ,  Gabriele PEREGO

IPC: H01B13/14

CPC classification number: H01B13/147 ,  H01B13/148

Abstract: An extruder (5) for extruding an electric cable includes at least one elongated electrically conductive element and at least one extruded thermoplastic layer surrounding said elongated electrically conductive element. The extruder has a member (4) for feeding a polymer in solid form, a barrel (6) fed by the feed member, and an extrusion screw (7) arranged inside the barrel (6) and making it possible for the polymer to melt gradually to form an extrusion composition and for this composition to be transported along the extrusion screw (7) to a distal end (21) of the extrusion screw (7). The extrusion screw (7) extends along a longitudinal axis (A). The extrusion screw has a barrier zone having at least two threads with an extrusion head (8) arranged at a distal end (21) of the extrusion screw (7) and configured to apply the composition around an elongated electrically conductive element. At least one liquid injection channel (22) is formed in the extrusion screw (7). The at least one injection channel (22) emerging inside the barrel (7) level, with at least one outlet orifice (30) formed on an outer surface of the extrusion screw (7).