To provide a polystyrene resin laminated foam sheet that is excellent in printing characteristics such that no delamination between foam layers will occur.

The polystyrene resin laminated foam sheet produced by coextrusion foaming comprises a polystyrene resin low density foam layer 11 having a density of 0.07 to 0.17 g/cm3and laminated and integrated with a polystyrene resin high density foam layer 12 having density of 0.18 to 0.45 g/cm3and a polystyrene resin non-foam layer in this order. The average bubble diameter of the polystyrene resin low density foam layer 11 is 200 to 500 μm, the average bubble diameter of the polystyrene resin high density foam layer 12 is 70 to 180 μm, and the ratio of the average bubble diameter of the polystyrene resin high density foam layer 12 to the average bubble diameter of the polystyrene resin low density foam layer 11 is 0.33 to 0.6.

COPYRIGHT: (C)2009,JPO&INPIT