| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction material having high cooling efficiency, solving a problem on a woven cloth that the rate of the depth of a groove to the thickness of the woven cloth is smaller and the flow amount of cooling liquid distributed in a single groove is small, namely, cooling efficiency is poor in the single groove. SOLUTION: The friction material 11 is annularly punched from the woven cloth W impregnated with a thermosetting resin and hardened by pressing work. The tissue of the cloth W for the friction material having high weaving cooling efficiency is multilayered with three plane-woven tissues W1, W2 and W3. The woven cloth W has threaded weft clearances 12 and threaded warp clearances 13. The weft clearance 12 is formed by lacking wefts Y1, Y2 and Y3. The warp clearance 13 is formed by lacking warps T11, T12, T21, T22, T31 and T32. COPYRIGHT: (C)2006,JPO&NCIPI
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