FOAM COMPOSITIONS AND USES THEREOF

A method of making a thermoplastic foam midsole component for an article of footwear and a thermoplastic foam midsole component made by such a method. The method comprising: forming a mixture which is a single phase solution of a supercritical fluid dissolved in a molten polymeric material comprising a thermoplastic elastomer, by adding the supercritical fluid to the molten polymer material or by infusing a solid resin comprising the polymeric material with the supercritical fluid to form infused resin, and melting the infused resin; injecting the mixture into a mold cavity; foaming the molten polymeric material, thereby forming a foamed polymeric material; solidifying the foamed polymeric material, thereby forming a solidified midsole component including solidified thermoplastic foam having a multicellular foam structure , wherein the solidified thermoplastic foam has a specific gravity of from about 0.05 to about 0.30, and the solidified midsole component has a closed skin; and removing the solidified midsole component from the mold cavity.