Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-06-11
1978-08-15
Kittle, John E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
118302, 118306, 118317, 301 5B, 427233, 427348, G01M 100
Patent
active
041069641
ABSTRACT:
A method and apparatus for correcting imbalance occurring in pneumatic tires during their manufacture. Correction is made by depositing on the inside surface of the tire, at a balance-correcting position, a measured quantity of an uncured, quick-curing, urethane or other liquid elastomer composition which bonds to such surface when cured, and curing the composition in place against the surface. The surface is cleaned in advance, as by washing, scrubbing, and/or abrading, to remove mold release agents and the like and to expose the bare rubber of the tire wall for bonding. The elastomer is desirably deposited in a pool, but may be dispensed in a stream of air or other gas directed toward the deposit. The air reduces the thickness of the pool and feathers its edges and thereby reduces the discontinuity between the deposited material and the tire surface, and promotes bonding. The elastomer composition is mixed in a dispensing head having a mixing chamber to which elastomer components are metered in predetermined proportions, and its quantity is controlled by time. The composition is dispensed from the head through a nozzle. After the elastomer is deposited, the head is separated from the tire and then rinsed with solvent and dried with gas to prepare it for a subsequent operation. Control of tire handling and preparation, metering of components, and operation of the dispensing head may be partially or largely automatic in response to previously recorded tire imbalance information.
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Conard Richard D.
Johnson Merrill N.
Kittle John E.
Ransburg Corporation
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