Patent ID: 8661710

Claim:
A method of manufacturing a fluid-filled chamber for an article of footwear, the method comprising: locating a first sheet, a second sheet, and a third sheet of a polymer material within a mold, the polymer material including a plurality of layers selected from the group consisting of (a) layers of thermoplastic polyurethane and ethylene-vinyl alcohol copolymer, (b) layers of ethylene-vinyl alcohol copolymer, thermoplastic polyurethane, and a regrind material of thermoplastic polyurethane and ethylene-vinyl alcohol copolymer, and (c) layers of a gas barrier material and an elastomeric material, and each of the first sheet, the second sheet, and the third sheet of the polymer material including multiple layers of different polymer materials; shaping the first sheet to define at least a first surface and an interior layer of a sidewall portion of the chamber; shaping the second sheet to define a second surface of the chamber; and bonding the third sheet to the interior layer of the sidewall portion to form an exterior layer of the sidewall portion.