Over three quarters of polyurethane products are used to form foams, with flexible polyurethane foam and rigid polyurethane foam being roughly equal in market size. In both cases, the foam is usually behind other materials: flexible polyurethane foams are behind upholstery fabrics in commercial and domestic furniture; rigid polyurethane foams are inside the metal and plastic[plastic?:Plastic sample cutting machine] walls of most refrigerators and freezers, or behind paper[paper?:paper sample maker cutting machine], metals and other surface materials in the case of thermal insulation panels in the construction sector.
Polyurethane foam are available in many forms, for use in insulation, sound deadening, flotation, industrial coatings, packing material, and even cast-in-place upholstery padding. Since polyurethane foam adhere to most surfaces and automatically fill voids, they have become quite popular in these applications.
