Composite foam article
AssigneeProprietect L.P.
InventorMotonori Kudo
Life of this patent
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Abstract
A composite foam article is disclosed herein. The composite foam article comprises a surface layer and a base layer with an interface therebetween. The surface layer comprises a high-resiliency polyurethane foam having an impact resilience of greater than about 50% when tested in accordance with ASTM D3574-17, and presents a seating surface. The base layer comprises a viscoelastic polyurethane foam having an impact resilience of less than about 50% when tested in accordance with ASTM D3574-17, and presents a mounting surface opposite the seating surface. The surface layer and the base layer are present in a thickness ratio of from about 17:3 to about 2:3.
Claims22
A composite foam article comprising:
- a surface layer comprising a high-resiliency polyurethane foam having an impact resilience of greater than about 50% when tested in accordance with ASTM D3574-17, and presenting an occupant support surface;
- a base layer comprising a viscoelastic polyurethane foam having an impact resilience of less than about 50% when tested in accordance with ASTM D3574-17, and presenting a mounting surface opposite said occupant support surface;
- and
- an interface between said surface layer and said base layer;
- wherein said surface layer and said base layer are present in a thickness ratio of from about 17:3 to about 2:3.
Dependencies are inferred from the claim text.