| 摘要 |
PURPOSE:To obtain a spiral leakage coaxial cable with superior heat resistance and refractoriness by comprising a second insulator layer of crosslinked- polyethylene, providing a heat insulation layer outside the insulator layer, and furthermore, comprising a casing layer of vinyl or flame retardant vinyl. CONSTITUTION:The spiral leakage coaxial cable 1A is constituted in such a way that an internal conductor layer 2 in which a conductor is wound spirally is provided on the upper layer of a magnetic core 1 as an internal insulator centering the core 1, and furthermore, an outer insulation layer 3, partial or entire layer of which is formed with the crosslinked-polyethylene is provided on the upper part of the layer 2. Also, a heat resistance layer 7 formed by winding an inorganic heat resistance material is provided on the outer insulation layer 3, and furthermore, an outer conductor layer 4 on which the conductor is wound spirally is provided on the outer periphery of the layer 7, and the casing layer 6 consisting of the vinyl or the flame retardant vinyl is formed on the upper part of the layer 4. In such a way, it is possible to comparatively easily obtain the spiral leakage coaxial cable in which the heat resistance and the refractoriness can be improved. |
