| abstract |
A biodegradable packaging film which has a specific coefficient of dynamic friction (µd) even immediately after film formation, changes little in the coefficient of dynamic friction (µd) during use, and has excellent suitability for use on packaging machines. It is a biodegradable multilayered film having a sealant layer on at least one surface thereof, and is characterized in that the sealant layer comprises a mixture of a polylactic acid resin (A), an aliphatic polyester resin (B) having a glass transition temperature Tg of 10°C or lower and a melting point of 70-120°C, and a lubricant (D), the (A)/(B) mixing ratio being from 55/45 to 13/87 by mass and the amount of (D) being 0.01-0.5 parts by mass per 100 parts by mass of the sum of (A) and (B), and that the surface has a coefficient of dynamic friction (µd) of 0.15-0.5. |