Method of making plastic cushion product

Abstract

Abstract A plastic cushion product comprising a flexible polyvinyl chloride skin and a closed-cell polyurethane core which is preferably directly bonded to the polyvinyl chloride skin. A preferred method of making the plastic cushion products comprising: molding and curing the vinyl chloride at temperatures above about 255* F. for a time sufficient to produce an open polyvinyl chloride shell of desired thickness and just sufficient to cure the polyvinyl chloride to its gild or gel stage; molding polyurethane foam at a temperature of at least 350* F. into a shape substantially conforming to the polyvinyl chloride shell; curing a second amount of vinyl chloride at the temperature and time conditions previously described to form a polyvinyl chloride cover such that the polyvinyl chloride shell and cover mate to form a completely enclosed structure; heating the completely enclosed polyvinyl chloride structure containing the polyurethane foam to a temperature of at least 350* F. to completely cure the polyvinyl chloride. The final cure bonds the polyvinyl chloride shell and cover into a substantially continuous skin and bonds the polyvinyl chloride shell and cover to the polyurethane foam to form an essentially unitary cushion product.

Inventors

• 👤 Hollis L Van Hosen

Bibliographic Details