Method of providing a passage in a tire

摘要

A method of providing a passageway in a tire is disclosed. The method comprises providing a filament (58) coated with a coating material (92), the coating material (92) comprising at least one substance dispersible in an uncured rubber compound; encasing the coated filament (104) into containment within an uncured flexible tire component (70); building a green tire component assembly from uncured tire components including the uncured flexible tire component (70) containing the encased coated filament (104); curing the green tire component assembly into a cured tire component assembly including the flexible tire component (70) containing the coated filament (104); and removing the filament (58) from the cured flexible tire component (70) to leave within the flexible tire component (70) a substantially unobstructed passageway (80).