According to the invention, the reinforcing elements of the working crown layers (41, 43) are metal cords having a diameter of less than 1.3 mm, at least one thread of each metal cord of at least one working crown layer is of at least UHT grade, the tensile elastic modulus at 10% elongation of at least the radially outermost calendering layer of at least the radially outermost working crown layer (43) is less than 8.5 MPa and at least said radially outermost calendering layer of at least the radially outermost working crown layer (43) has a macrodispersion Z value of greater than 85.
PNEUMATIQUE COMPORTANT UNE ARMATURE DE SOMMET ALLEGEE
PNEUMATIC TYRE HAVING A LIGHTWEIGHT CROWN REINFORCEMENT
LUFTREIFEN MIT LEICHTGEWICHTIGER GÜRTELVERSTÄRKUNG
2022-03-23
Patent
Electronic Resource
French
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |