| 摘要 |
PROBLEM TO BE SOLVED: To obtain a water absorption shrinkable polyvinyl alcohol(PVA)-based fiber suitable as a sanitary material and a nonwoven fabric using the fiber, and further, a sanitary material using the fiber. SOLUTION: This water absorption shrinkable PVA-based fiber has 20-50% shrinkage percentage in water at 30 deg.C, 0.2-0.7 (shrinkage percentage in water at 30 deg.C)/maximum shrinkage percentage, 0.1-3 cN/dtex wet modulus of elasticity and <=0.2 mass % ash content.
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