Tire repair patch and method of manufacture

Details Tire repair patch and method of manufacture Tire repair patch and method of manufacture

B - Operations, Transporting

60

C

152/97, 154/71.0

B60C 21/02 (1980.01)

Patent

CA 1165216

ABSTRACT OF THE DISCLOSURE .GAMMA. A tire repair patch having at least one ply package enveloped by an unvulcanized base cushion gum layer and an unvulcanized top cushion gum layer joined at the edges of the ply package. The overlapping plies of reinforcing cords in the ply package are coated with rubber and are at least partially vulcanized prior to assembly of the patch to increase the strength of the patch and decrease the curing time upon application to a tire. The patch is made by coating the plies with rubber, laying the plies one on top of the other to form the ply package, heating the package to cure the rubber coating and then positioning the ply package between the unvulcanized cushion gum layers. An un- vulcanized intermediate cushion gum layer may be positioned between two ply packages where there is more than one ply package in the patch.

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