High-absorbent polyvinyl alcohol fibers and nonwoven fabric comprising them
AssigneeKuraray Co., Ltd.
InventorsShinya Inada, Satoru Kobayashi, Junichi Taniguchi, Suguru Mizuki, Hideki Kamada, Masakazu Nishiyama
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Abstract
Cross-linked polyvinyl alcohol fibers prepared from a water-soluble polyvinyl alcohol, which satisfy the following requirements: (1) a water absorption in water at 30° C. ranging from 10 to 100 times the weight of the fibers; (2) a fiber diameter in water at 30° C. as a result of absorbing water ranging from 2 to 10 times the diameter of the fibers not having absorbed water; and (3) a melting point ranging from 160 to 220° C., and a heat of fusion ranging from 40 to 100 J/g.
Claims16
Cross-linked polyvinyl alcohol fibers prepared from a water-soluble polyvinyl alcohol, which satisfy the following requirements:
- (1) a water absorption in water at 30° C. ranging from 10 to 100 times the weight of the fibers;
- (2) a fiber diameter in water at 30° C. as a result of absorbing water ranging from 2 to 10 times the diameter of the fibers not having absorbed water;
- and
- (3) a melting point ranging from 160 to 220° C., and a heat of fusion ranging from 40 to 100 J/g.
Dependencies are inferred from the claim text.