| abstract |
(57) [Abstract] [Purpose] To provide a composite material that is useful as a building material, a vehicle material, and a ship material, which has excellent heat insulation, light weight, mechanical strength, and flame retardancy. [Composition] Polyvinylidene chloride foamed resin 50% by weight A composite material containing the above-mentioned and independent granules alone or a lump or plate-like thermoplastic foamed resin in which the granules are fused to each other is covered with a thermosetting resin. |