Pirelli Pneumatici S.p.a.

Cèline Almonacil

Guido Riva

Maurizio Boiocchi

Stefano Bizzi

Giancarlo Cucco

A tire includes a carcass, a belt structure, and a tread band. The belt structure includes at least two belt plies and at least one belt layer radially external to the belt plies. The at least one belt layer extends at least for an axial width of the at least two belt plies and includes at least one first elongated element and at least one second elongated element. The elongated elements form turns substantially oriented in a circumferential direction of the tire. The turns are alternately disposed along an axial development of the at least one belt layer. The at least one first elongated element is a hybrid cord including at least one high-elastic-modulus filament and at least one low-elastic-modulus filament that are twisted together. An elastic modulus of the at least one second elongated element is lower than an elastic modulus of the at least one first elongated element.

Tyre with specified belt structure

A process for manufacturing a tire includes providing an elastomeric layer on an outer surface of a toroidal support, manufacturing the tire on the toroidal support provided with the elastomeric layer, introducing the tire supported on the toroidal support into a moulding cavity, introducing a fluid under pressure into a space defined between the toroidal support and an inner surface of the tire in order to press an outer surface of the tire against walls of the moulding cavity, and curing the tire. The elastomeric layer forms an inner circumferential surface of the tire. The process further includes causing an electrical current to flow in at least one heating element provided to the outer surface of the toroidal support so as to obtain at least partial precuring of the elastomeric layer. A toroidal support for carrying out the process is also disclosed.

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Milan, Italy

Cèline Almonacil