SUPPORTING LINE FOR CABLE OVERHEAD EXTENSION AND CABLE FOR OVERHEAD EXTENSION

PROBLEM TO BE SOLVED: To provide a supporting line for cable overhead extension which can be peeled from a tension member without tearing a resin layer and enables a work time to be reduced, and also to provide a cable for overhead extension. SOLUTION: A supporting line 10 for cable overhead extension is made by coating a tension member 1 consisting of a single wire with an adhesive resin layer and further coating the resin layer 2 externally with a non-adhesive resin layer, wherein the peel strength between the tension member 1 and the adhesive resin 2 or between the adhesive resin layer 2 and the non-adhesive resin layer 3 is lower than the breaking strength of the non-adhesive resin layer 3. Thus, the resin layer is peeled without breaking the non-adhesive resin layer 3. COPYRIGHT: (C)2007,JPO&INPIT