| 摘要 |
PROBLEM TO BE SOLVED: To improve mechanical strength and moisture resistance, while holding biodegradable performance of a specific level, in a machine part composed of a biodegradable resin composition. SOLUTION: This machine part is composed of a resin composition including a reinforced fiber material at a rate of 15-40 mass% of the whole quantity of the resin composition with an ethylene-vinyl alcohol copolymer having the ethylene contact of 25-40 mol% as a base resin. In a rolling bearing, at least a cage is composed of the resin composition. COPYRIGHT: (C)2011,JPO&INPIT
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