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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Application filed by Sumitomo Electric Industries LtdfiledCriticalSumitomo Electric Industries Ltd
Priority to JP5011377ApriorityCriticalpatent/JPS53136687A/en
Publication of JPS53136687ApublicationCriticalpatent/JPS53136687A/en
PURPOSE: To improve fire spread prevention performance by stranding together a plurality of electric cables using readily combustible material as insulator, covering the resultant strand with a highly incombustible material to provide a substantially circular sectional profile and covering the outer layer with a highly incombustible resin composition as a sheath.