Abstract: A foamed sheet including: a polylactic acid; and a filler, wherein the foamed sheet has a compressive stress of 0.2 Mpa or less when the cushioning coefficient of the foamed sheet is 10 or less; and wherein the foamed sheet has a puncture strength of 2 N or more when the sheet thickness of the foamed sheet is 2 mm.

Abstract: Provided is a method of manufacturing a molded body. The method includes: producing a foam sheet having a crystallinity degree A of 7.5% or less by using a composition containing polylactic acid comprising 98 mol % or more of any one among a D-isomer of lactic acid and an L-isomer of lactic acid as a constituent monomer unit; and molding the foam sheet with heat to produce a molded body, and a difference (B?A) between the crystallinity degree A of the foam sheet and the crystallinity degree B of the molded body is 20.0% or more and 40.0% or less.

Abstract: A polylactic acid resin composition is provided that contains a polylactic acid resin and inorganic particles. The polylactic acid resin composition has a weight average molecular weight of 250,000 to 600,000, and the inorganic particles have a hydrophobicity of 65% by volume or higher and a carbon content of 4% by mass or more.

Abstract: Provided is a foam sheet includes a composition including polylactic acid. The polylactic acid includes, as monomer units. D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 98 mol % or greater. An amount of the polylactic acid is 98% by mass or greater relative to a total amount of organic matter in the foam sheet. Bulk density of the foam sheet is 0.063 g/cm3 or greater but 0.125 g/cm3 or less.

Abstract: Provided is a foam sheet including a composition including polylactic acid. The polylactic acid includes, as monomer units, D-lactic acid and L-lactic acid, and an amount of the D-lactic acid or the L-lactic acid in the polylactic acid is 90 mol % or greater but less than 98 mol %. An amount of the polylactic acid is 97% by mass or greater relative to a total amount of organic matter in the foam sheet. When the foam sheet is cut into a square test piece, and the test piece is heated and stored for 90 minutes in a hot air circulation dryer a temperature of which is maintained at 90° C.±2° C., a change rate of an area of the test piece before and after the heat storage is within ±15%. An average thickness of the foam sheet is 0.5 mm or greater.

Abstract: A foamed sheet including: a polylactic acid; and a filler, wherein the foamed sheet has a compressive stress of 0.2 Mpa or less when the cushioning coefficient of the foamed sheet is 10 or less; and wherein the foamed sheet has a puncture strength of 2 N or more when the sheet thickness of the foamed sheet is 2 mm.