Method and apparatus for moulding and curing a tyre for vehicle

摘要

A method for moulding and curing a tyre for a vehicle wheel includes building a tyre on a toroidal support, placing the tyre carried by the toroidal support into a moulding cavity, pressing an outer surface of the tyre against walls of the moulding cavity using a working fluid under pressure, and heating the working fluid. The toroidal support includes an outer surface whose shape substantially matches the tyre's inner surface. The walls of the moulding cavity conform in shape to an outer surface of the tyre when vulcanization is completed. The working fluid flows in at least one diffusion gap between the toroidal support and the tyre. The working fluid in contact with the tyre has a critical temperature lower than a vulcanization temperature and the working fluid is submitted to circulation. An apparatus for moulding and curing a tyre for a vehicle wheel is also disclosed.