Brief description of the joint of a layer of material to the embodiment of a roughing raw tire

摘要

A method for jointing an external layer (12) of material to a base layer (14) to produce a green tire, the green tire having an axis of revolution (X), the method comprising a step of applying the outer layer (12) to the base layer (14), followed by a step of jointing the outer layer (12) to the base layer (14). The jointing step is done using a pressing element (18) surrounding the outer layer (12) and elastically deformable between a configuration called the enlarged configuration and a configuration called the outer-layer (12) pressing configuration, in which the pressing element (18) applies a radial pressure to the outer layer, the jointing step comprising the following steps: the passage of the pressing element (18) from the enlarged configuration to the layer-pressing configuration, the movement of the pressing element (18) in the pressing configuration, in the axial direction (X) of the green tire.