Profile: General Plastics Mfg. Co. manufactures Last-A-Foam® cellular solid polyurethane and polyisocyanurate products. We specialize in high-density rigid & flexible polyurethane foams, energy absorbing materials, structural products for composite core applications, machined & molded parts and environmental graphics products. Our molded rigid foam parts are used in RTM/VARTM core applications, sub-munition weapon packaging, fuel floats and shaped-charge holders.