Bladder shell for inflatable balls

摘要

A bladder shell for inflatable balls is formed by latex dipping to produce layers of compounded synthetic latex and compounded natural rubber latex. These layers are laminated together and cross-linked integrally to each other by vulcanization. The ratio of the thickness of the compounded synthetic latex layers relative to the thickness of the compounded natural rubber latex layers in the resultant bladder shell is in the range of from 80:20 to 20:80, and the total thickness of the resultant compounded laminated layers is in the range of from 0.25mm to 3.0mm. The bladder shell has low air permeability combined with high bounce properties.