Method of making an improved tire building sleeve and said sleeve
AssigneeThe Goodyear Tire & Rubber Company
InventorJeffrey W. Saracsan
Life of this patent
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Abstract
This invention relates to a method of making sleeves or bladders for tire building machines for building bias angle tires, bias belted tires or radial ply belted tires by building the core of the sleeve of natural rubber, high cis polybutadiene, high cis polyisoprene, acrylonitrile-butadiene and butadiene styrene, and covering the outside of the core and at least part of the inside thereof with a layer of polyurethane elastomer, where the expose coat contains 0.5 to 10 percent by weight of silicone polycarbinol as slip agent.
Claims5
A sleeve for a tire building machine, including an inflatable body portion having dimensions suitable for attachment in operative relationship with a tire building machine, said body portion comprising an inner layer or core of a cured compounded elastomer selected from the class of rubber polymers consisting of natural, high cis-polybutadiene, high cis-polyisoprene, acrylonitrile-butadiene and butadiene stryene and at least one coat of a polyurethane elastomer which extends around the ends of the inner layer past at least the area that contacts the drum, said polyurethane elastomer containing 0.5 to 10 percent by weight of a silicone polycarbinol or silicone polycarbinal.
Dependencies are inferred from the claim text.