Tire innerliner
AssigneeHercules Incorporated
InventorsKuang F. Lin, Daniel W. Klosiewicz, Gregory I. Brodsky
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Abstract
An innerliner for tubeless tires is comprised of at least one barrier layer such as poly(vinylidene chloride) or ethylene--vinyl alcohol copolymer film with each barrier layer sandwiched between two layers of an elastomeric material adhering to the rubber stock employed in the carcass of the tire. The innerliner has the advantage of imparting equal or better air retention properties to the tire with a substantial reduction in the thickness and weight relative to conventional halobutyl rubber innerliners.
Claims13
A laminated structure comprising at least one layer of a thin film non-elastomeric barrier material that (i) has an air permeability of no more than 0.05 Barrer at 23.degree. C., (ii) is thermally stable to withstand the conditions required for the vulcanization of the rubber layer, and (iii) has adequate flexibility and extensibility to meet the requirement for fabrication process and functional needs, and a layer of an elastomer based material adhered to each surface of each barrier layer, the laminated structure being extensible beyond the elastic limit of the barrier layer without destroying its barrier ability.
Dependencies are inferred from the claim text.