Maillefer Sa

Pekka Huotari

Ali Harlin

Jyrki Pennala

Jorma Leppänen

The invention relates to a method and arrangement of crosslinking or vulcanizing an elongate element, the method including an extrusion step in which a conductor element is coated by a layer of crosslinkable synthetic material and a crosslinking step in which crosslinking reaction is carried out after the extrusion step. The crosslinking reaction is carried out at first in a first heating zone by heating by heating the coated conductor element in a temperature of 550 degrees Celsius or higher. The first heating zone is located downstream of the extrusion step. After the first heating zone the crosslinking reaction is carried further by heating the coated conductor in a temperature of 200-300 degrees Celsius in a second heating zone.

Method and arrangement for cross-linking or vulcanizing an elongate element

The invention relates to an arrangement for inductively heating an electrical conductor after the extrusion head in a process of manufacturing electrical cables () having insulation layer on the electrical conductor. The arrangement comprises a first distinctive part having induction means (), and a second distinctive part having guide means () and provided in a splice box () for directing the magnetic field created with the induction means () to protect external parts from heating.

Arrangement and method for heating an electrical conductor

An arrangement in connection with clamping tools, which comprises a nozzle structure which consists of coaxially arranged nozzle elements and is arranged to form one or more layers which cover a flexible elongated element on the surface of the flexible elongated element, which passes through the innermost nozzle element, in which arrangement at least the head of the nozzle element, which controls the flexible elongated element, is a separate unit which is arranged to be pushed into its position in the direction of the flexible elongated element and provided with gripping means, which grip the innermost nozzle element of the nozzle structure as the unit arrives at the nozzle element. The joint between the separate unit and the nozzle element of the nozzle structure is arranged to be loosened by repulsive force acting on the separate unit in the direction of the flexible elongated element and the separate unit is arranged to exit from the nozzle structure in the direction of the flexible elongated element.

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Kotalahti, Finland

Pekka Huotari