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US 9,801,431 B2Granted
Regrind polyurethane with glycol or polyol additive
AssigneeNIKE, Inc.
InventorsDavid Jay Goldwasser, David G. Smith
Life of this patent
Estimating the term…
Abstract
A surface element including a recycled polyurethane and a glycol or polyol additive is provided. The surface element has an increased tearability as compared to the recycled polyurethane. An article of footwear and methods of preparing an article of footwear are also provided.
Claims20
An article of footwear or a component of an article of footwear having a surface element, prepared by a method comprising:
- providing scrap polyurethane, wherein the scrap polyurethane has a first melt index and a first tearability;
- mixing the scrap polyurethane with a glycol or polyol additive;
- increasing the first melt index;
- forming a sheet from the polyurethane and glycol or polyol additive mixture;
- applying an area of the sheet to an outer region of an article of footwear or a component of an article of footwear;
- and
- forming the surface element, wherein forming the surface element comprises
- tearing away a perimeter of the sheet around the area.
5 more elements
An article of apparel or sports equipment with a surface element prepared by a method comprising:
- providing recycled polyurethane, wherein the recycled polyurethane has a first melt index and a first tearability;
- mixing the recycled polyurethane with a glycol or polyol additive;
- increasing the first melt index;
- forming a sheet from the polyurethane and glycol or polyol additive mixture;
- applying an area of the sheet to an outer region of an article of apparel or sports equipment;
- and
- forming the surface element, wherein forming the surface element comprises
- tearing away a perimeter of the sheet around the area.
5 more elements
Dependencies are inferred from the claim text.