TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first and third structural layers further comprise: a thermoformable, pre-impregnated sheet molding compound; and a pre-impregnated material. The thermoformable, pre-impregnated sheet molding compound further comprises thermoset material, polymer resin, inert fillers, fiber reinforcement, catalysts, pigments, stabilizers, release agents and/or thickeners. The pre-impregnated material comprises one of glass mat thermoplastic material, Kevlar (RTM: Para-aramid synthetic fiber), E-Glass, carbon fiber material and/or composite fiber material. The first and third structural layers have same or different thickness. The spatial support layer is of greater thickness compared to the first and third structural layer. In the wind blade: the top structural layer and bottom structural layer are of thickness 1-5 mm, preferably 1.3-1.7 mm; the middle support layer is of thickness 1-50.8 mm, preferably 1-5 mm; and the sheet is placed into a mold and cured to bond the top structural layer to the middle support layer, and to bond the bottom structural layer to the middle support layer, where the sheet is cured at 200-400 degrees F, preferably 280-320 degrees F. Preferred Method: The method further comprises: providing the desired cure temperature of 200-400 degrees F, preferably 280-320 degrees F; providing the polymer material comprising one of polyester, polypropylene, polyurethane, polyvinylchloride and/or styrene acrylonitrile resin; selecting the first pre-impregnated material comprising one of sheet molding compound, glass mat thermoplastic material, Kevlar (RTM: Para-aramid synthetic fiber), E-Glass, carbon fiber material and/or composite fiber material; providing the first layer and third layer of thickness 1-5 mm, preferably 1.3-1.7 mm; and providing the middle layer of thickness 1-50.8 mm, preferably 1-5 mm.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The spatial support layer is made of the polymer material. EXAMPLE - No suitable example given.