To avoid the breakage of an incinerator and the occurrence of noxious gas even in incineration, and maintain lightweight and excellent operation by forming a laminate of an acrylic resin molded body containing a specific quantity of an inorganic filler and a specific foaming magnification of an acrylic resin foamed body.

An pollution-free combustible lightweight molded article is formed by laminating an acrylic resin foamed body containing a -10-400 pts.wt. inorganic filler with respect to 100 pts.wt. acrylic resin and an acrylic resin foamed body of a 1.2-20 time foaming magnification. Although calcium carbonate, silica, and so on are given for such an inorganic filler, calcium carbonate is most suitable economically. The inorganic filler-containing acrylic resin molded body is obtained by a method of kneading and extruding an inorganic filler into molten resin by the use of an extruder. Also, a laminate of the inorganic filler-containing acrylic resin molded body and acrylic resin foamed body is obtained by adhering and laminating both of them through an adhesive.