Patent ID: 8123639

Claim:
A seamless bladder having a combination of good air retention characteristics as well as good bounce characteristics for inflatable balls, characterized in that the bladder is made from carboxylated acrylonitrile butadiene latex and no other latex: wherein the said bladder has weight varying from about 500 mg/inch 2 to about 1.5 g/inch 2 ; wherein the said bladder has thickness varying from about 0.30 mm to 3.0 mm; wherein the said bladder does not have cracks therein; wherein the said bladder has modulus varying from about 17 to 20 Kg/Cm 2 at 100% stretch or elongation; wherein the said bladder's tensile strength varies from about 150 to 180 kg/cm 2 ; wherein the said bladder has elongation at break varying from 650 to 750%.