Pirelli Tyre S.p.a.

Nv Bekaert Sa

Simone Agresti

Mario Mariani

Pierangelo Misani

Thomas Hanel

Luca Giannini

Guido Luigi Daghini

Luciano Garro

Stefano Bizzi

Alessandro Ascanelli

Pietro Luigi Cavallotti

Emiliano Resmini

Barbara Rampana

Claudia Riccardi

Paola Caracino

Andrea Pieralli

Omar Ballabio

Federico Pavan

Stefano Tresoldi

Carlo Maria Gaifami

Amedeo Mondolo

Davide Bolgiaghi

Federico Cianciosi

Luca Nobili

A tyre for vehicle wheels comprises a support structure and a tread band arranged in a radially outer position with respect to the support structure. The support structure comprises at least one reinforcing layer including a plurality of hybrid reinforcing cords (') each having a metallic wire () twisted together with a multifilament textile yarn () comprising a plurality of filaments (). In any cross section of each of said hybrid reinforcing cords (′), the metallic wire () is at least partially embedded in the filaments () of the multifilament textile yarn ().

Tyre for vehicle wheels

The invention relates to a metallic reinforcing cord () for tyres for vehicle wheels, comprising from two to ten metallic wires () twisted together with a twisting pitch (P) and each having a predetermined diameter. In at least some cross sections of the metallic reinforcing cord (), at least two of said metallic wires () are arranged to a minimum mutual distance greater than, or equal to, 2.5 times the predetermined diameter.

Vehicle wheels and tyre comprising said metallic reinforcing cord

The invention relates to a metallic reinforcing cord for tyres for vehicle wheels, comprising at least two metallic wires twisted together with a predetermined twisting pitch, wherein the metallic reinforcing cord has a part load elongation greater than 3%, preferably greater than 3.5%.

Metallic reinforcing cord for tyres for vehicle wheels

The invention relates to a metallic reinforcing cord () for tyres for vehicle wheels, comprising a plurality of metallic wires () twisted to one another with a single twisting pitch (P), or a single metallic wire twisted with at least one second metallic wire with a single twisting pitch, or a plurality of first metallic wires twisted to one another with a first twisting pitch to define a first strand of metallic wires and at least one second metallic wire twisted with said first strand of metallic wires with a second twisting pitch equal to or different from the first twisting pitch. The metallic reinforcing cord () has a part load elongation greater than or equal to 1%.

The present disclosure relates to a process and apparatus for manufacturing a metallic reinforcing cord for tyres for vehicle wheels comprising providing at least one elongated element comprising at least one metallic wire twisted together with at least one textile yarn and removing the at least one textile yarn from the at least one elongated element to form the aforementioned metallic reinforcing cord a wherein the metallic reinforcing cord has a helical geometry, consisting of the at least one metallic wire that extends along a helical path.

Process and apparatus for manufacturing a metallic reinforcing cord for tyres for vehicle wheels

A method and an apparatus for producing a steel wire for reinforcing an elastomeric material. The steel wire has a metal core and a coating layer made of a metal alloy material having a composition including at least one first metal component and at least one second metal component. The method includes the steps of: a) conveying the steel core along a predetermined path in a substantially continuous manner; b) co-sputtering at least one first powered cathode made of said first metal component and at least one second powered cathode made of said second metal component onto the steel core being moved along the predetermined path to obtain a coating layer made of a metal alloy material of a first composition; and c) adjusting the power provided to at least one of the first and second cathodes to obtain a coating layer made of a metal alloy material of a second composition.

Method and apparatus for producing a metal wire coated with a layer of metal alloy

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Milan, Italy

Simone Agresti