| 摘要 |
The present invention relates to a biodegradable multi-layer sheet having uniformly improved impact resistance and heat resistance, and a manufacturing method thereof. The biodegradable multi-layer sheet having uniformly improved impact resistance and heat resistance is characterized by having a B/A/B multi-layer structure, wherein an (A) layer, which is an inner layer, consists of a rubber-modified graft copolymer and polylactic acid (PLA) having 5-10 g/10 min of melt viscosity, and a (B) layer, which is an outer layer, consists of at least one polymethyl methacylate selected from polymethyl methacylate (PMMA)-based homopolymers or copolymers and a polylactic acid mixture having 30-90 g/10 min of melt viscosity. The biodegradable multi-layer sheet having uniformly improved impact resistance and heat resistance of the present invention comprising above solves existing problems by containing polylactic acid in a fixed ratio so as to maintain excellent biodegradability as well as improves impact resistance and heat resistance, thereby showing properties as uniformly enhanced functions on the sheet such that excellent properties are displayed in being used as a product. |
