| 摘要 |
A foam polymer jacketed rigid strength member for fiber optic cable is disclosed, as is the method for its production. The foam jacket is made by feeding into an extruder a base polymer material, preferably a resin, such as polypropyene. The base material is melted in the extruder and a blowing agent is admixed. As the mixture exits the extruder, the polymer is expanded into a cellular foam. The polymer is foamed onto a rigid strength member by means of a crosshead. The resulting jacketed rigid strength member demonstrated improved resistance to thermal contraction reducing the contribution of stresses in the fiber optic cable components. <IMAGE> |
