Patent ID: 8236399
Filing Date: 2012-08-07
Classification: A63H,B32B,C23C,Y10T

Abstract:
1. A balloon formed from a lamination, the lamination comprising; a polyester film with a total thickness of 4 μm to 12 μm comprising a biaxially oriented polyester core layer comprising high crystalline polyester and at least one amorphous copolyester skin layer; a sealant layer adjacent to the amorphous copolyester skin layer; a first gas barrier layer on an opposite side of the polyester film from the sealant layer; and a second gas barrier layer on the first gas barrier layer; wherein an oxygen transmission rate of the balloon is less than 0.02 cc/100 sqin/day, a sealing strength of the balloon is more than 3.5 kg/in, and a floating time of the balloon is more than 40 days.