Expansion molded body and method for producing molded body
A foam the molded body with excellent flame retardancy. A foam molded body formed of a foam-molded resin composition containing a base resin and a flame retardant. An expansion ratio of the foam molded body is 1.1 to 9.0 times, the base resin contains polyolefin, and a blending amount of the flame retardant in the resin composition is 0.1 to 10% by mass.
1 . A foam blow molded body formed of a foam-molded resin composition containing a base resin, a flame retardant, and carbon black,
wherein
the foam blow molded body is hollow,
the foam-molded resin composition is foamed by using a physical foaming agent and a chemical foaming agent,
the physical foaming agent is carbon dioxide gas,
an expansion ratio of the foam blow molded body is 4.0 times,
the base resin contains 90 wt. % polypropylene and 10 wt. % polyethylene,
a blending amount of the flame retardant in the resin composition is 1.0% by mass,
the flame retardant is a hindered amine-based flame retardant, and
a wall thickness of the foam blow molded body is 2.0 mm.
2 . The foam blow molded body of claim 1 ,
wherein an average cell diameter of the foam blow molded body in a thickness direction is 100 to 1000 μm.