| 摘要 |
PURPOSE:To provide a new fireproofing cable having high flame retardant and excellent fireproofing characteristics. CONSTITUTION:In this invention, a fireproofing cable is formed by coating on conductors 1 with an insulator 3 through a fireproofing layer 2 in an insulator core 4, winding a retainer tape 5 in the periphery of the insulator cores 4, and further coating on this retainer tape with a sheath 6. The insulator 3 is formed of a polyolefin mixture of 30,000j/g or less heating value, and further the sheath 6 is formed of a resin composition mixing 50 to 200 pts.wt. metal oxide relating to 100 pts.wt. polyolefin. |
