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AssigneeApollo Tyres Global R&D B.V.
InventorsEvert-Jan Jitse Van Der Meulen, Peter Jaap Snel, Walter Johannes Maria Roerdink, Harmen Hepkema
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The invention relates to a vehicle tire comprising a tread portion and a package of reinforcement layers arranged underneath the tread portion. The tread portion comprises a tread layer, a tread base layer arranged underneath the tread layer, and at least one rubber member that extends in the radial direction of the tire from the ground contacting surface to the reinforcement package. The tread layer rubber composition has an electrical resistivity at room temperature of more than 108 ohm-cm, the tread base layer rubber composition of between 106 ohm-cm and 108 ohm-cm, the member rubber composition of less than 106 ohm-cm; and the rubber composition of at least one layer of the reinforcement package has a electrical resistivity at room temperature of less than 106 ohm-cm. The vehicle tire combines a low rolling resistance with improved conductivity to avoid build-up of static electricity.
A vehicle tire comprising a tread portion and a package of reinforcement layers arranged underneath (radially inwards from) the tread portion, the tread portion comprising a tread layer that provides a ground contacting surface and is disposed in a radially outward part of the tire, and a tread base layer arranged underneath the tread layer, the tread portion further comprising at least one rubber member that extends in the radial direction of the tire from the ground contacting surface to the reinforcement package, the tread layer rubber composition having an electrical resistivity at room temperature of more than 108 ohm-cm;
A method of manufacturing the tread portion of a vehicle tire to be provided on a reinforcement package of the tire, the tread portion comprising a tread layer that provides a ground contacting surface and is disposed in a radially outward part of the tire, and a tread base layer arranged underneath the tread layer, the tread portion further comprising at least one rubber member that extends in the radial direction of the tire from the ground contacting surface to the reinforcement package, the method comprising providing a tread layer rubber composition having a electrical resistivity at room temperature of more than 108 ohm-cm;
Dependencies are inferred from the claim text.