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Encapsulation of telecommunications cable splices

  • US 4,322,573 A
  • Filed: 03/11/1980
  • Issued: 03/30/1982
  • Est. Priority Date: 03/11/1980
  • Status: Expired due to Term
First Claim
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1. A method of forming a splice in a telecommunications cable between a pair of bared conductor ends from a first cable and a pair of bared conductor ends of a second cable comprising:

  • drawing a selected pair of conductors from the first cable through a slit in the cable, providing said conductors with bared ends, and forming electrical connections between said bared ends of the first cable and the bared ends of the second cable;

    wrapping overlapping and contacting windings of heat softenable sealing tape around the first cable and beneath the connections and the bared conductor ends;

    wrapping overlapping and contacting windings of the sealing tape in contact with the first windings and around said first cable and over the connections and bared conductor ends so as completely to enclose the connections and bared conductor ends in the overlapped windings;

    injection molding an encapsulation of molten plastic material around the sealing tape wrapping and around adjacent insulation covered cable, the injection temperature being sufficiently high to soften the sealing tape and merge it into a single mass to cause the mass to completely and sealingly enclose the bared conductor ends and connections, the plastic material being compatible with the material of the insulation to provide a fluid-tight bond upon cooling; and

    cooling the encapsulation during which it shrinks upon the softened sealing tape the resultant pressure causing the merged single mass of tape to become shaped intimately into fluid-tight sealing contact with the connection and bared conductor ends.

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