OPTICAL CABLE PROVIDED WITH A MECHANICALLY RESISTANT COVERING

摘要

The present invention relates to an optical cable comprising at least one element for the transmission of optical signals, and a structure that is able to protect said at least one element. Said structure is a multilayer structure and is arranged in a position radially external to said at least one element and comprises: a) at least one first covering layer of polymeric material in a position radially external to said at least one element; b) at least one covering layer of foamed polymeric material in a position radially external to said at least one first covering layer, and c) at least one second covering layer of polymeric material in a position radially external to said at least one covering layer of foamed polymeric material. The foamed polymeric material has a density between 0.3 and 0.7 kg/dm<3> and tensile modulus at 20 DEG C between 300 and 700 MPa. The present invention further relates to a multilayer structure of the type as above and a method for the protection of at least one element for the transmission of optical signals.