Patent ID: 8696970
Filing Date: 2014-04-15
Classification: B29D

Abstract:
1. A process for producing pneumatic tyres, comprising: building a green tyre on a toroidal support, said green tyre having a pair of beads each defined along a respective inner circumferential edge of said tyre, said toroidal support having an outer surface the shape of which substantially matches that of an inner surface of the green tyre; moulding each bead by tightening the bead between a surface portion of the toroidal support and an annular clamping surface axially opposite to the surface portion of the toroidal support; transferring the tyre with the beads maintained to a tightened condition, into a moulding cavity, said moulding cavity having an inner wall substantially conforming in shape to an outer surface of the tyre; and moulding and vulcanizing the tyre, wherein an at least partial vulcanization of each bead is achieved while said bead is tightened between said surface portion of the toroidal support and said annular clamping surface and before transferring the tyre into the moulding cavity, whereby transferring the tyre into the moulding cavity is carried out with the beads at least partially vulcanized.