| abstract |
PROBLEM TO BE SOLVED: To provide a polystyrene-based resin multilayer foamed sheet capable of obtaining a food container having high heat resistance, suppressing uneven thickness of a surface layer, and more reliably preventing a hole in a resin layer during microwave heating. To do. SOLUTION: The polystyrene-based resin multilayer foamed sheet is formed by laminating a polystyrene-based resin foam layer, an adhesive layer and a polypropylene-based resin layer by coextrusion, and the vicut softening temperature of the polystyrene-based resin constituting the foam layer is 110 ° C. As described above, the closed cell ratio of the foam layer is 85% or more, the basis weight of the adhesive layer is less than 15 g / m 2 , the basis weight of the resin layer is 10 to 100 g / m 2 , and the thickness of the resin layer. The fluctuation coefficient of is 20% or less. [Selection diagram] None |