Pirelli Tyre S.p.a.

Alfredo Balini

Stefano Cazzanti

Gianni Mancini

Vincenzo Boffa

Gaetano Lo Presti

Davide Lupo Conti

Cristiano Puppi

Albert Berenguer

Angelo Mazzucato

Maurizio Boiocchi

Thomas Hanel

Fabio Regoli

Luca Giannini

Piero Losi

Stefano Bizzi

Luigia Rossiello

Matteo Accorra'

Mauro Bigogno

Lorenzo Avanzini

Marco Pozzoli

Dario Rattazzi

Giorgio Zuliani

Guido Carlo Carosio

Oscar Mazzocchi

Claudia Palumbo

Davide DALL'ABACO

The present disclosure relates to a tyre () for vehicle wheels comprising at least one carcass structure (), a tread band () applied in a position radially external to said carcass structure, and a pair of sidewalls () applied laterally on the opposite sides with respect to said carcass structure, where on at least one sidewall of said pair of sidewalls (), a label () is applied comprising a protective layer (), an adhesive layer (), and possibly one or more ink layers () interposed between said protective layer () and said adhesive layer (), where said adhesive layer () adheres the label () to the surface of said sidewall, where said protective layer () comprises polyester-based and/or polyether-based cross-linked aliphatic polyurethanes exhibiting dynamic elastic modulus values E', measured at 25° C., static tensile deformation 1%, dynamic deformation ±0.1%, and frequency 1 Hz, equal to or higher than about 5 MPa, and a residual deformation measured at 25° C. after 4 cycles of deformation from 0% to 12%, equal to or lower than about 1%.

Tyre for vehicle wheels

An insert for a mould for vulcanising tyres for vehicle wheels, the insert arranged to receive in a seat formed on a moulding surface of the mould and comprising a base surface from which a plurality of projections extends; wherein, each projection comprises a lateral surface extending away from the base surface such that the lateral surface defines a tapered profile of the projection away from the base surface, is inclined at an angle between 10° and 25° with respect to a direction perpendicular to the base surface, and has a roughness between 4 and 11 μm.

Insert for a mould for vulcanising tyres for vehicle wheels, process for producing said insert and process for vulcanising tyres

A tyre monitoring device with an electronic unit enclosed in an encapsulation material. The encapsulation material forms a single body with an upper portion and a lower portion. The upper portion encloses and protects the electronic unit and the lower portion has a base surface aimed at fixing said device to the inner surface of the tyre.

Tyre monitoring device comprising an electronic unit and tyre comprising said device

Tyre for vehicle wheels, comprising a tread band comprising circumferential grooves, circumferential ribs defined by said circumferential grooves and a plurality of sipes () that extend, on said circumferential ribs, from a radially outer surface of the tread band towards a radially inner portion of the tread band. Said sipes () extend along a predetermined trajectory and comprise, in any cross section perpendicular to said predetermined trajectory, a main portion () having a first radial dimension (H′) and a first transversal dimension (T, T′) substantially constant along a radial direction and, in a radially outer position with respect to said main portion (), a top portion () extending up to said radially outer surface of the tread band and having, at said radially outer surface of the tread band, a second transversal dimension (W) greater than said first transversal dimension (T, T′).

A method for controlling the discharge of fluids during a process for vulcanization and moulding of a green tire includes the steps of: building at least one portion of a radially internal surface of a green tire by winding of a continuous elongated element of elastomeric material into a plurality of coils confining circumferential grooves along the rolling direction of the tire; disposing the circumferential grooves into fluid communication with discharge channels present in the radially external surface of a pressing bladder disposed in a radially internal cavity bounded by the green tire.

Method for controlling the discharge of fluids during a process for vulcanization and molding of a green tire and tire for vehicle wheels

An apparatus for manufacturing tires for vehicle wheels includes devices designed to form a green tire, a vulcanization mold having holding walls defining a molding cavity, and devices for transferring the green tire into the molding cavity. The vulcanization mold includes a plurality of vent valves, at least one of which includes a duct and a closure member having a closing head that is axially movable relative to the duct. The closing head is movable between a closed position, at which the closing head forms a contact seat, and an open position, at which the closing head and inner wall confine a passage for connection with the molding cavity.

Apparatus for manufacturing tyres for vehicle wheels

A high performance rain tire includes a tread band, having an inner portion and an outer portion as well as a central zone. There are formed in the tread band: two circumferential grooves in the inner portion, a central circumferential groove and a plurality of inner transverse grooves and a plurality of outer transverse grooves, wherein the inner transverse grooves include a central inner section which defines an angle with respect to the equatorial plane of between approximately &#x2212;95&#xb0; and approximately &#x2212;135&#xb0; and the outer transverse grooves include a central outer section which defines an angle, relative to the equatorial plane, of between approximately +125&#xb0; and approximately +165&#xb0;.

High performance rain tyre

A method for controlling the discharge of fluids during a process for vulcanization and molding of a green tire includes the steps of: building at least one portion of a radially internal surface of a green tire by winding of a continuous elongated element of elastomeric material into a plurality of coils confining circumferential grooves along the rolling direction of the tire; disposing the circumferential grooves into fluid communication with discharge channels present in the radially external surface of a pressing bladder disposed in a radially internal cavity bounded by the green tire.

In a method of manufacturing tires for vehicle wheels, a green tire, once formed, is transferred into a vulcanization mold and pressed against the holding walls of a molding cavity. Concurrently with the pressing step, a fluid present between the green tire and the holding walls is evacuated through vent valves. The tire is brought into contact with the closing head of each valve so as to push it toward a closed position at which the closing head forms a contact seat spaced apart from the inner surface of the molding cavity in order to define an embedding recess between the inner surface of the molding cavity and the closing head.

Method and apparatus for manufacturing tyres for vehicle wheels

In a method for manufacturing tires for vehicle wheels, a green tire, once formed, is transferred into a vulcanization mold and pressed against the holding walls of a molding cavity. Concurrently with the pressing step, a fluid present between the green tire and the holding walls is evacuated through vent valves. The tire is brought into contact with the closing head of each valve so as to push it toward a closed position of the valve itself. The closing head has a distal portion facing the molding cavity and includes at least one grip element for the tire blend, so that the closure member is pulled toward the open position while the molded and cured tire is moved away from the inner surface of the molding cavity.

In a method for manufacturing tyres for vehicle wheels, a green tyre, once formed, is transferred into a vulcanisation mould and pressed against the holding walls of a moulding cavity. Concurrently with the pressing step, a fluid present between the green tyre and the holding walls is evacuated through vent valves. The tyre is brought into contact with the closing head of each valve so as to push it toward a closed position of the valve itself. The closing head has a distal portion facing the moulding cavity and includes at least one grip element for the tyre blend, so that the closure member is pulled toward the open position while the moulded and cured tyre is moved away from the inner surface of said moulding cavity.

Growing community of inventors

Milan, Italy

Alfredo Balini