| 摘要 |
PURPOSE:To provide a sufficient strength even when the number of embedded fibers is reduced, to improve rubber kneading and injection moulding workability, to provide an effective function under a proper rigidity, and to provide excellent durability to an internal pressure and vibration. CONSTITUTION:In a flexible pipe 11 consisting mainly of a resilient substance 14, a short fiber reinforcing material 15 formed of polybenzazole fibers is embedded in the resilient substance 14 without being orinetated. |
