| 摘要 |
PURPOSE:To improve gripping ability and to prevent surface damage by laying a pin-shaped member made of a complex member, in which fiber cords are buried in plastic, under tread rubber so that if becomes a specified angle to the tread surface. CONSTITUTION:Fiber cords 6 made of organic fiber such as aramid fiber, etc. or inorganic fiber such as carbon fiber, etc. are buried in thermoplastic resin such as polysulfone, etc. or thermosetting resin such as epoxyresin, etc. so as to make complex material C. This complex material C is formed into a pin shape with diameter of 0.3-15mm and laid under blocks 3-5 of tread rubber at the angle of 45 deg.-90 deg. to the tread surface. Then, it is laid under the unit blocks 3-5 at a rate of 5-25% by volume. By this constitution, the gripping ability can be improved and the surface damage can be prevented. |
