Tire repair patch and method of manufacture

A tire repair patch for application to a surface of a tire at an injured portion comprising a ply package of at least two overlapping plies of reinforcing cords, an unvulcanized base cushion gum layer at the underside of said patch for engagement with said surface of said tire, an unvulcanized top cushion gum layer at the opposite side of the patch from said underside, said base and top cushion gum layers being joined at a location beyond the edges of said ply package, each of said overlapping plies of said ply package having a rubber coating and said ply package being at least partially vulcanized prior to assembly with said base cushion gum layer and said top cushion gum layer to increase the strength of said patch and reduce the curing time required to apply said patch to said surface of said tire and said ply package being vulcanized in an amount to provide a unified body having sufficient strength to bridge an injury in a tire surface and prevent deformation into said injury.