SELF-SEALING TYRE AND PROCESS FOR ITS MANUFACTURE

摘要

Tyre for vehicle wheels, comprising: a carcass structure having at least one carcass ply shaped in a substantially toroidal configuration, whose opposite lateral edges are associated with respective bead wires; a belt structure comprising at least one belt strip applied in a circumferentially outer position with respect to said carcass structure; a tread circumferentially superimposed on said belt structure; a pair of sidewalls applied laterally on opposite sides with respect to said carcass structure; at least one layer of sealing composition placed in a radially inner position with respect to said tread; wherein said sealing composition comprises: (a) at least one high molecular weight amorphous polymer; (b) at least one low molecular weight amorphous polymer; (c) at least one reinforcing filler; is substantially non-crosslinked and has a flowability value, measured at a temperature of loo°C and at a pressure of 30 bar, not higher than 30 cm3/s.