POLYLACTIC ACID-BASED RESIN FOAMED SHEET, AND METHOD FOR PRODUCING CONTAINER MADE OF THE SHEET

摘要

PROBLEM TO BE SOLVED: To provide a polylactic acid-based resin foamed sheet which is excellent in extrusion characteristics on the production of the foamed sheet, and in biodegradability, and has a beautiful appearance, and to provide a method for producing a container made of the polylactic acid-based resin foamed sheet which is excellent in heat resistance and productivity.

SOLUTION: The first invention : the polylactic acid-based resin foamed sheet is characterized in that a resin composition comprising 100 pts.wt. of a polylactic acid having melt tension of 25 to 70 g at 190°C and 1.0 to 4.0 pts.wt. of talc is extruded in the presence of a foaming agent in a sheet-like shape at a foamable polylactic acid-based resin composition shear rate of 150 to 800 sec-1 in the nozzle exit portion of a die to give the polylactic acid-based resin foamed sheet having a foaming ratio of 1.1 to 12.0 and a thickness of 0.5 to 2.5 mm. The second invention : the method for producing the polylactic acid-based container made of the resin foamed sheet excellent in heat resistance comprises producing through specific three processes.

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