US 12,136,502 B2
Communication cable
Ryoma Uegaki, Mie (JP); Kinji Taguchi, Mie (JP); Takaki Endo, Mie (JP); Tatsuya Shimada, Mie (JP); and Yuta Yasuyoshi, Mie (JP)
Assigned to AUTONETWORKS TECHNOLOGIES, LTD., Mie (JP); SUMITOMO WIRING SYSTEMS, LTD., Mie (JP); and SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/801,967
Filed by AUTONETWORKS TECHNOLOGIES, LTD., Mie (JP); SUMITOMO WIRING SYSTEMS, LTD., Mie (JP); and SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Feb. 5, 2021, PCT No. PCT/JP2021/004289
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/171960, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2020-030046 (JP), filed on Feb. 26, 2020.
Prior Publication US 2023/0098842 A1, Mar. 30, 2023
Int. Cl. H01B 7/18 (2006.01); H01B 3/30 (2006.01); H01B 7/02 (2006.01); H01B 11/00 (2006.01); H01B 11/02 (2006.01)
CPC H01B 7/18 (2013.01) [H01B 3/30 (2013.01); H01B 7/02 (2013.01); H01B 11/002 (2013.01); H01B 11/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A communication cable, comprising:
a signal cable configured as a twisted pair cable by twisting a pair of insulated wires with each other, each insulated wire having a conductor and an insulation coating covering an outer periphery of the conductor; and
a solid sheath covering an outer periphery of the signal cable,
wherein:
a constituent material of the sheath contains a polypropylene and a melt flow rate of the constituent material of the sheath measured at 200° C. and with a load of 2.16 kg is 0.25 g/10 min. or more,
when a thickness of the insulation coating in a thinnest part of the insulated wire is a short thickness and a thickness of the insulated wire in a direction orthogonal to a direction of the short thickness is a long thickness, a coating thickness ratio specified as a ratio of the short thickness to the long thickness is 65% or more and 95% or less, and
the short thickness is the thickness of the insulation coating in a part where the pair of insulated wires are in contact with each other in a central part of the signal cable.