Abstract: In a process for building tyres for vehicle wheels, at least one tread band (9) or other elastomeric component of a tyre (2) is made by applying at least one continuous elongated element (14) according to a plurality of turns (C) around a forming drum (15) rotating around a geometric rotation axis (X) thereof. The continuous elongated element (14) is made by the action of extruding a first material through an extrusion nozzle (16), to form an inner core (33) of said continuous elongated element (14) exiting from an outlet opening (18) of the extrusion nozzle (16). During the extrusion, a second material different from the first material is conveyed around the first material, at the extrusion nozzle (16) and upstream of the outlet opening (18), to form a coating layer (32) which entirely surrounds the inner core (33).

Abstract: 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.

Abstract: The present invention relates to elastomer compositions comprising adducts between compounds of formula (I) preferably derived from natural sources such as mucic, pyromucic, glucaric, glycaric, galactaric, muconic acid and/or linear derivatives thereof containing ester or amide groups and/or cyclic derivatives thereof with heteroatoms in the ring, such as oxygen or nitrogen, and carbon allotropes in which the carbon is sp2 hybridized, such as for example carbon nanotubes, graphene or nanographites, carbon black.

Abstract: 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 ?m.

Abstract: A working station for deposition of elementary semifinished products for building tyres is, the working station includes an anthropomorphic robotized arm for moving an output end effector, a building drum, a feeding apparatus and a control apparatus. The control apparatus is configured to calculate, in a drive interval, a pulse with modulation (PWM) profile for a speed parameter and controlling the output end effector as a function of the PWM.

Abstract: A method for controlling the rolling resistance of a running tyre includes: manufacturing a tyre, installing the tyre on a rim, mounting a wheel on a vehicle. The tyre is manufactured by obtaining an external profile of the tyre that is asymmetric with respect to a middle line plane of the tyre and configured to generate, between the tyre rotating in rectilinear running and the ground, a lateral conicity force, conferring to the tyre the asymmetric external profile. The asymmetric external profile is obtained so as to control a resulting lateral force exchanged between the ground and the tyre and to limit a rolling resistance of the tyre running on rectilinear trajectory.

Abstract: The present invention relates to a process for the preparation of diketones and pyrrole derivatives, optionally substituted in the 2 and/or 5 positions, from furans.

Abstract: Car tyre (100) having a tread band (7) comprising a central region (L1) and two shoulder regions (L2, L3); the central region (L1) having a plurality of ribs (8, 9, 10), wherein a first rib (8) with a plurality of first transverse grooves (15) comprising a substantially straight first segment (15?), inclined relative to a direction parallel to said equatorial plane (X-X) so as to form an angle ? smaller than or equal to 70°, a substantially straight counter-inclined second segment (15?) and a curved connecting segment (15??) extending between said first segment (15?) and said second segment (15?); —the first rib (8) further comprising first straight sipes (21) located in the first rib (8) between said first transverse grooves (15) and extending over at least 60% of the width of said first rib (8); the first sipes (21) forming with said equatorial plane (X-X) an angle ?? preferably equal to the angle ? of the first segment (15?) of the first transverse grooves (15).

Abstract: The present invention relates to new polyurethane or polyurea organic reinforcing fillers for elastomeric tyre compounds, tyre components and tyres for vehicle wheels that comprise them. Advantageously these organic fillers allow reducing the weight of the elastomeric compounds that include them and confer to the materials a hysteresis that is in line or even lower, moduli stable at different temperatures, and high load/elongation at break.

Abstract: A motorcycle tyre, comprising a radial carcass structure (2) and a tread band (8) applied at a radially outer position with respect to the radial carcass structure (2), wherein the radial carcass structure (2) comprises a first carcass ply (3a) and a second carcass ply (3b) including a first plurality of textile reinforcing cords (30) and a second plurality of textile reinforcing cords (32), respectively, wherein the first textile reinforcing cords (31) are parallel to each other and the second textile reinforcing cords (33) are parallel to each other and have a respective first and second inclination at a crown portion (8c) of the tread band (8) with respect to an equatorial plane (X-X) of the tyre, wherein said second inclination is opposite to said first inclination. The first textile reinforcing cords (31) and the second textile reinforcing cords (33) have a tenacity comprised between 0.35 cN/Tex and 1.2 cN/Tex at 2% elongation and comprised between 0.5 cN/Tex and 3 cN/Tex at 5% elongation.

Abstract: The invention relates process and an apparatus for labeling a green bicycle tire. The process comprises-fitting a tyre (2) around a support table (11): —positioning, in a pressing area (23) arranged on the support table (11), a tread junction (6a) carried by the tyre (2) fit around the support table (11); —applying at least one label (32) on the tyre (2); —pressing the tread junction (6a) during the application of said at least one label (32).

Abstract: In a process for building tyres for vehicle wheels, at least one tread band (9) or other elastomeric component of a tyre (2) is made by applying at least one continuous elongated element (14) according to a plurality of turns (C) around a forming drum (15) rotating around a geometric rotation axis (X) thereof. The continuous elongated element (14) is made by the action of extruding a first material through an extrusion nozzle (16), to form an inner core (33) of said continuous elongated element (14) exiting from an outlet opening (18) of the extrusion nozzle (16). During the extrusion, a second material different from the first material is conveyed around the first material, at the extrusion nozzle (16) and upstream of the outlet opening (18), to form a coating layer (32) which entirely surrounds the inner core (33).

Abstract: Tyre (1) for motor-cycles comprising a monitoring device (10) fixed onto the inner surface (2) of the tyre (1) at a crown portion (16), wherein the monitoring device (10) comprises a flexible support (13) in single body on which an electronic unit (11) and an electric power supplier (12) are fixed, wherein the electronic unit (11) comprises: at least one sensor for detecting at least one of the following physical quantities: temperature, pressure, acceleration, deformation; a processing unit; a transceiver.

Abstract: The present invention relates to a tire for vehicle wheels which comprises at least one structural component comprising at least one reinforcing element constituted by an elongate element coated with, or embedded in, a vulcanised elastomeric compound obtained by vulcanising an elastomeric composition comprising per 100 phr of diene elastomeric polymer: (i) a predispersion of a diene elastomeric polymer and lignin, in an amount to provide the elastomeric composition with 100 to 10 phr of diene elastomeric polymer and a quantity of lignin equal to or greater than 20 phr, (ii) from 0 to 90 phr of a diene elastomeric polymer, (iii) at least 30 phr of a carbon black reinforcing filler, (iv) optionally, a reinforcing resin comprising at least 0.5 phr of a methylene acceptor compound associated with at least 0.2 phr of a methylene donor compound, (v) from 0.1 to 10 phr of carbon nanotubes, and (vi) from 0.

Abstract: The present invention relates to a tire for vehicle wheels comprising at least one structural component comprising at least one reinforcing element comprising an elongate member coated with, or embedded in, a vulcanised elastomeric compound obtained by vulcanising an elastomeric composition comprising per 100 phr of diene elastomeric polymer: (i) a predispersion of a diene elastomeric polymer and lignin, in an amount to provide the elastomeric composition with 100 to 10 phr of diene elastomeric polymer and an amount of lignin equal to or greater than 25 phr. (ii) 0 to 90 phr of a diene elastomeric polymer, (iii) at least 30 phr of a carbon black reinforcing filler, (iv) optionally, a reinforcing resin comprising at least 1 phr of a methylene acceptor compound associated with at least 1 phr of a methylene donor compound, and (v) 0.1 to 12 phr of at least one vulcanising agent, wherein at least 50 phr of said diene elastomeric polymer consists of natural or synthetic isoprene rubber.