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US 5,106,890 AGranted
Polyvinyl alcohol-starch film
AssigneeNippon Gohsei Kagaku Kogyo Kabushiki Kaisha
InventorsMotokazu Maruhashi, Hiroshi Tokonami
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Abstract
A polyvinyl alcohol-starch film which is prepared from a composition comprising a polyvinyl alcohol having a degree of hydrolysis of at least 93% by mole and a starch, the film being at least uniaxially stretched. The film of the present invention is excellent in water resistance, and moreover in degradable property.
Claims6
A polyvinyl alcohol-starch film which is prepared from a composition comprising a polyvinyl alcohol having a degree of hydrolysis of at least 93% by mole and a starch, said film being at least uniaxially stretched in a stretching ratio of not less than 1.2.
Dependencies are inferred from the claim text.