Importance

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Abstract

Disclosed is a formed article made of a biodegradable resin material which maintains strength sufficient for practical use and, when discarded after use, succumbs to decomposition by the action of microorganisms occurring in the physical world without bringing destruction on the physical environment or inducing public nuisance in consequence of the decomposition. The formed article is formed of a multicomponent polymer material comprising a continuous phase and a disperse phase; the continuous phase is made of a polybutylene succinate type and/or polyethylene adipate type aliphatic polyester and the disperse phase is made of polylactic acid. The continuous phase may comprise the aliphatic polyester containing such an inorganic filler as talc or calcium carbonate. The formed article of biodegradable resin constructed as described above may be manufactured in arbitrarily selected shapes and used for products in various fields, particularly for slide fasteners and separable fasteners.

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First Claim