Patent ID: 8597450
Filing Date: 2013-12-03
Classification: A63B,B29D,B32B

Abstract:
1. A method of manufacturing a sport ball, the method comprising: bonding edges of a plurality of polymer elements together to define seams in a bladder; joining an inflation tube to the bladder at a location of at least one of the seams; locating the bladder within an interior of a casing of the sport ball such that the inflation tube extends through the casing and to an exterior of the casing; injecting a pressurized fluid into the bladder through the inflation tube; and sealing the inflation tube; wherein the bladder is formed of multiple layers of material including a first center layer, a second layer, and a third layer, wherein the first layer is disposed between the second layer and the third layer, and wherein the first layer is joined to both the second layer and the third layer; wherein the first layer is formed of a first material, the second layer is formed of a second material, and the third layer is also formed of the second material, wherein the second material is different from the first material; and wherein the first material includes an ethylene-vinyl copolymer, and wherein the second material includes a thermoplastic polyurethane.