公开(公告)号：US20020088642A1

公开(公告)日：2002-07-11

申请号：US09925528

申请日：2001-08-10

Applicant: Pirelli Cavi E Sistemi S.p.A.

Inventor： Luigi Caimi

IPC: H01B007/00

CPC classification number: H01B3/441 ,  H01B3/002 ,  H01B7/282 ,  H01B7/295 ,  Y10T29/49117

Abstract: The disclsoure describes an electric conductor having a coating layer with the property of strippability so that it can be stripped from the electric conductor, and a method for controlling the strippability of the coating layer from the electric conductor, with the electrical insulation properties of the cable coating being kept constant after exposure to moisture. The method involves adding to a polymeric composition forming the coating layer a predetermined amount of a polyolefinic compound, which contains at least one unsaturation and at least one carboxyl group in the polymer chain.

Abstract translation: 该实施例描述了具有具有剥离性的涂层的电导体，使得其可以从导电体剥离，以及用于从电导体控制涂层的剥离性的方法，其中电缆的电绝缘性能 涂层在暴露于水分后保持恒定。 该方法包括向形成涂层的聚合物组合物中加入预定量的在聚合物链中含有至少一个不饱和键和至少一个羧基的聚烯烃化合物。

公开(公告)号：US20020104678A1

公开(公告)日：2002-08-08

申请号：US09971766

申请日：2001-10-09

Applicant: PIRELLI CAVI E SISTEMI S.p.A.

Inventor： Sergio Belli ,  Luigi Caimi ,  Claudio Bosisio ,  Alberto Bareggi ,  Luca Balconi ,  Giovanni Pozzati

IPC: H01B007/00

CPC classification number: H01B3/441 ,  H01B7/28 ,  Y02A30/14

Abstract: A cable, in particular a cable for electric power transmission or distribution, having an inner layer comprising a self-repairing material with a predetermined cohesiveness and a controlled flowability, so as to re-establish, upon creation of a discontinuity in at least one of the cable coating layers, the continuity in the coating. The discontinuity in the coating can be caused by mechanical abuses of various types, for example accidental impact with cutting tools. Infiltration of moisture and generation of leakage currents, leading to a rapid corrosion of the conductor, are in this way avoided.