Patent ID: 7727606
Filing Date: 2010-06-01
Classification: B29C,B29K,B65D,C08J,Y10T

Abstract:
1. A polylactic acid resin blow-molded foam obtained by placing in a mold a foamed parison having a foamed layer, which is formed by extruding a foamable molten resin composition prepared by kneading together a polylactic acid resin and a physical blowing agent from a die into a low-pressure zone, and blow-molding it, wherein the polylactic acid resin constituting a molding's foamed layer is modified with an organic peroxide or a polymerizing agent selected from an isocyanate, epoxy compound, metal complex, polycarboxylic acid and mixture thereof, and, the molding's foamed layer constituting the foamed molding has a difference (ΔH an exothermic calorific value (ΔH a melt tension at 190° C. of 2-15 cN, an apparent density of 0.03 to 0.42 g/cm an average thickness of 1 to 15 mm, and a closed cell content of 50 to 100%.