| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coaxial cable with low manufacturing cost and high attenuation characteristics in high frequency transmission, and also to provide the manufacturing method thereof. <P>SOLUTION: The coaxial cable has an inner conductor, an insulating layer made of a fluororesin foam covering the periphery of the inner conductor, an outer conductor installed in the periphery of the insulating layer, and a sheath layer installed in the periphery of the outer conductor, and the fluororesin satisfies following (A) and (B). (A) Melting viscosity at 372°C is 102-107 poise. (B) Fluoride ions extractable in methanol/water mixed solution of volume ratio of 1:1 is 1.5 ppm or less. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
