Patent ID: 9688057
Date: 2017-06-27
CPC Classifications: B32B,Y10T

Claim:
1. A multilayered biodegradable film comprising at least one first resin layer and at least one second resin layer, wherein: the first and second resin layers are alternately layered; the first resin layer comprises a polylactic acid-based polymer; the second resin layer comprises an aliphatic polyester-based resin that is different from the polylactic-acid based polymer or an aliphatic-aromatic copolymerized polyester-based resin; and the multilayered biodegradable film has a coloring peak value of 0.3 or less, a haze of 10% or less, and an elastic modulus of 300 kgf/mm wherein the multilayered biodegradable film is a laminated film composed of 43 to 220 layers; wherein the first resin layer forms both outermost layers of the multilayered biodegradable film; and wherein an average thickness of each of the first resin layers except for the two first resin layers forming the outermost layers is in a range of 133 to 5,000 nm.