POLYSTYRENE-BASED RESIN FOAM SHEET, LAMINATE SHEET AND CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a polystyrene-based resin foam sheet capable of more favorably preventing generation of bubbles.SOLUTION: There is provided a polystyrene-based resin foam sheet comprising a foamed resin layer which has a midpoint glass transition temperature (T) of 92°C or more and less than 102°C, wherein the surface roughness (Ra) on at least one surface of the foamed resin layer is 3.0 to 15.0 μm. The foamed resin layer contains a foaming agent, the content of the foaming agent in the foamed resin layer preferably is 2.2 to 3.6 mass% and the foamed resin layer preferably contains a styrene-(meth)acrylic ester copolymer.SELECTED DRAWING: None