| abstract |
(57) [Summary] [Problem] A biodegradable film suitable as a garbage bag, a general bag, a general packaging film, and the like, is hard to be broken even if garbage having various shapes or protrusions is put therein, and Provided is a biodegradable film having improved tear strength and impact resistance which does not break even when subjected to an impact such as dropping. A film comprising a mixture of a polylactic acid-based resin (A) and a biodegradable polyester (B) other than (A) having a glass transition temperature Tg of 10 ° C. or less, The film has a tear strength of 7 mN / μm or more per unit thickness as measured by IS-K-7128 (Method B), -A biodegradable film having an impact strength measured by D1709-91 (A method) of 3 mJ / [mu] m or more per unit thickness. |