PNEUMATIC TYRE FOR ROAD VEHICLES

A pneumatic tire for road vehicles is provided. The pneumatic tire includes a tread portion. The tread portion includes an outer layer and an inner layer. The outer layer is made with a compound A having a dynamic modulus at 30° C. of between 5 and 15 MPa and a tan δ at 60° C. of between 0.400 and 0...

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Bibliographic Details
Main Authors D'ALFONSO, Claudio, AGORETTI, Pasquale
Format Patent
LanguageEnglish
French
German
Published 23.02.2022
Subjects
DEVICES OR ARRANGEMENTS RELATED TO TYRES
PERFORMING OPERATIONS
REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL
TRANSPORTING
TYRE CHANGING OR REPAIRING
TYRE INFLATION
VEHICLE TYRES
VEHICLES IN GENERAL
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Summary:A pneumatic tire for road vehicles is provided. The pneumatic tire includes a tread portion. The tread portion includes an outer layer and an inner layer. The outer layer is made with a compound A having a dynamic modulus at 30° C. of between 5 and 15 MPa and a tan δ at 60° C. of between 0.400 and 0.100. The inner layer is made with a compound B having a dynamic modulus at 30° C. that is lower than that of said compound A of a value between 0.5 and 10 MPa and a tan δ at 60° C. that is lower than that of said compound A of a value between 0.01 and 0.20. The outer layer and the inner layer are in contact with one another by means of a connection surface, which has a corrugated conformation that is such to provide an alternated plurality of interpenetrating longitudinal portions. Each of said interpenetrating longitudinal portions extending parallel to an axis of rotation X of the pneumatic tire.
Bibliography:Application Number: EP20190724927