As buildings in cities have become higher and more intelligent, elevators serving as a vertical traffic line have become increasingly important. An elevator cable for a skyscraper requires the increased number of core wires, reduction of weight and ensuring safety. With increase of information to be transmitted, we have encouraged development of super multicore elevator cables. Additionally, we have developed a sheath material for lightweight elevator cables with lower smoke emission rate during burning. A halogen-free flame-retardant elevator cable using this sheathing is about 20 percent lighter than a conventional elevator cable. The smoke emission rate of this cable is 60 percent lower than that of a conventional cable. Fujikura's halogen-free flame-retardant elevator cable that we will report on later has been recently adopted for superfast elevators installed in skyscrapers.
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