Patent ID: 8909015

Claim:
A loose tube type fiber optic cable, comprising: a central tensile wire for endowing tensile strength to the optical cable; a plurality of loose tube optical units arranged to contact the central tensile wire and each having a plurality of optical fibers and a loose tube surrounding the optical fibers; a reinforcing member surrounding the loose tube optical units; and a sheath surrounding the reinforcing member, wherein the loose tube consisting essentially of a polypropylene-polyethylene copolymer having a melt flow index (MFI) of 1.1 g/10 minutes to 3.0 g/10 minutes at 230° C., a flexural modulus of 10,000 to 23,000 kg/cm 2 , and an Izod impact strength of 10 kgf·cm/cm or above, wherein the polypropylene-polyethylene copolymer does not include a nucleating agent.