| 摘要 |
PROBLEM TO BE SOLVED: To provide an insulating tape for insulating and covering a coil for a motor, a cable, an electric wire for an aircraft or the like by using a laminate of a polyimide film and a fluororesin improved in resistance when exposed to a high-temperature and high-humidity environment. SOLUTION: The insulating tape for covering an electric wire is obtained by processing a laminate into a tape form, the laminate being formed by laminating a fluororesin layer on one or both surfaces of a polyimide film containing Ti element. The concentration of the atoms of the Ti element on the surface of the polyimide film is within a range of 0.2 to 1 atomic%. The laminate has a property of passing a withstand voltage test performed after being immersed in a 70°C aqueous solution of 5 wt% sodium chloride for 2000 hours, according to the SAE AS4373 method 602. COPYRIGHT: (C)2007,JPO&INPIT
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