Polypropylene-polyethylene copolymer buffer tubes for optical fiber cables and method for making the same
AssigneeAlcatel NA Cable Sytems, Inc.
InventorsHou-ching M. Yang, James D. Holder, Christopher W. McNutt
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Abstract
A buffer tube for an optical fiber cable is made from a polypropylene-polyethylene copolymer resin having nucleating agents and filler materials disbursed therein. The nucleating agents and filler materials improve compression-tension resistance and thermal expansion properties of the polypropylene-polyethylene copolymer buffer tube.
Claims14
A buffer tube for use in an optical fiber cable comprising a tube made from polypropylene-polyethylene copolymer resin having a nucleating agent disbursed therein.
An optical fiber cable comprising:
- a buffer tube made from a polypropylene-polyethylene copolymer resin having a nucleating agent disbursed therein;
- and
- at least one optical fiber transmission medium positioned in the buffer tube.
A method for making a buffer tube for an optical fiber cable, the method comprising the steps of:
- mixing a nucleating agent with a polypropylene-polyethylene copolymer resin to form a nucleated polypropylene-polyethylene copolymer resin;
- extruding the nucleated polymeric resin so as to form a polypropylene-polyethylene copolymer buffer tube having a nucleating agent disbursed therein;
- and
- incorporating the so formed buffer tube in an optical fiber cable.
Dependencies are inferred from the claim text.