Method of making polyester cord radial tires

Details Method of making polyester cord radial tires Method of making polyester cord radial tires

B - Operations, Transporting

29

D

18/159

B29D 30/06 (2006.01)

Patent

CA 1151825

ABSTRACT OF THE DISCLOSURE Tires made using polyester cord in the fabric plies are built in a conventional manner, cured in a conventional manner in a curing press, removed from the curing press and held in an uninflated state for a length of time sufficient for the tire to cool to 300°F (149°C), then post inflated. The tires remain in the inflated state until the temperature has been reduced below 90°C. The cords in the tires which have been subjected to the post inflation treatment of the present invention have less tendency for sidewall waviness than tire which have been post inflated out of the mold immediately after curing and without being subjected to cooling water in the bladder. Also the cooling period outside the mold has been found to be as successful in solving the sidewall waviness problem as the injection of cooling water into the bladder for 2 minutes at the end of the cure cycle.

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