Biodegradable molded article and container using the molded article
AssigneeYoshino Kogyosho Co., Ltd.
InventorsMasahiro Sugai, Junichi Chiba, Masato Suzuki, Shuichi Kitora
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Abstract
A biodegradable molded article and a container using the molded article, exhibiting heat resistant properties. The molded article is obtained by injection molding a polylactic acid resin, wherein the polylactic acid resin of the molded article contains less than 4 mol % of D-lactic acid. The molded article has a crystallized portion having a ratio of the crystallizing heat quantity to the melting heat quantity (|ΔHC|/|Hm), which ratio is not more than 0.7 in a differential scanning calorimetry (DSC) curve.
Claims9
A molded article adopted to be subjected to subsequent stretching, obtained by injection molding polylactic acid resin, wherein the polylactic acid resin of the molded article contains less than 4 mol % of D-lactic acid, and has a crystallized portion having a ratio of the crystallizing heat quantity to the melting heat quantity (|ΔHc|/ΔHm), which ratio is not more than 0.7 in a differential scanning calorimetry (DSC) curve.
A biodegradable container, which can be disintegrated and vanished in a natural environment, having a final shape obtained by stretching of a molded body that comprises polylactic acid resin, wherein:
- the polylactic acid resin comprises poly-L-lactic acid containing less than 4 mol % of D-lactic acid, and having a crystallized portion having a ratio of the crystallizing heat quantity to the melting heat quantity (|ΔHc|/ΔHm), which ratio is not more than 0.7 in a differential scanning calorimetry (DSC) curve, the crystallized portion forming a non-stretched portion of the container.
Dependencies are inferred from the claim text.