US Patent 7111331 Method of molding a toilet seat assembly

A toilet seat assembly 10 includes a toilet seat 12 having a seat skin 14 defining the exterior surfaces thereof and a seat core 16 disposed within and surrounded by the seat skin 14 and a cover 18 having a cover skin 20 defining the exterior surfaces thereof and a cover core 22 disposed within and surrounded by the cover skin 20. The assembly is characterized by the cores 16, 22 each comprising a waste material. The waste material may be a single polymer wasted in the process of making other products. Alternatively or in combination therewith, combining a plurality of different materials (including different polymers) from different sources may be employed to formulate the waste material.