Multi-region band element for run flat tire

摘要

A run flat pneumatic tire includes a thin annular band embedded in the crown portion of the tire wherein the band is formed with three distinct regions. Radially spaced inner and outer regions are formed of high modulus materials and a central region is formed of a material more elastic than the other two regions providing a band having high interlaminar shear strength. Reinforcing fibers are placed in various orientations in certain of the regions to enable various materials to achieve the required band stiffness for load carrying capability and the interlaminar shear strength at the central axis of the band.