Patent ID: 7691217
Filing Date: 2010-04-06
Classification: B29C,B29D,B29L

Abstract:
1. A process for manufacturing a tyre, comprising: providing an elastomeric layer on an outer surface of a rigid toroidal support; manufacturing the tyre on the rigid toroidal support provided with the elastomeric layer, wherein the rigid toroidal support includes a plurality of circumferential segments defining an outer surface of the toroidal support; introducing the tyre supported on the rigid toroidal support into a moulding cavity; introducing a fluid under pressure into a space defined between the rigid toroidal support and an inner surface of the tyre in order to press an outer surface of the tyre against walls of the moulding cavity; and curing the tyre; wherein the outer surface of the rigid toroidal support comprises a shape substantially matching a shape of the inner surface of the tyre, wherein the elastomeric layer forms an inner circumferential surface of the tyre, wherein the walls of the moulding cavity comprise a shape that matches a shape of the outer surface of the tyre, and wherein the process further comprises causing an electrical current to flow in at least one heating element provided to the outer surface of the rigid toroidal support so as to obtain at least partial precuring of the elastomeric layer, wherein the at least one heating element comprises, in a radial direction from an inside toward an outside of the at least one heating element, a thermally insulating layer and an electrically resistive circuit.