Method of forming a tire

Details Method of forming a tire Method of forming a tire

B - Operations, Transporting

29

D

B29D 30/08 (2006.01)

Patent

CA 2571238

A method of forming a tire includes a) forming a carcass, the carcass comprising at least one carcass reinforcing ply, a pair of opposing sidewalls, and a pair of bead portions, b) placing a belt structure on the carcass, c) forming a tread stock, d) placing the tread stock on the belt structure, and e) curing the tire in a mold wherein the mold has at least one rib to form a groove on the radially outer surface of the tire. A tube is placed adjacent to or within the tread stock prior to the curing the tire, wherein the tube creates a buried groove in the cured tire. After wear of the tire tread to a preset level, the tube is exposed and opened during further wear to create increased grooving in the tread after the tire has experienced some tire wear.

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