Patent ID: 8876997
Filing Date: 2014-11-04
Classification: B29D

Abstract:
1. A method of manufacturing tyres for vehicle wheels, comprising the steps of: disposing a carcass structure comprising at least one carcass ply on a primary drum; assembling a belt structure comprising at least one belt layer on an auxiliary drum; picking up the belt structure from the auxiliary drum; transferring the belt structure to a coaxially centered position relative to the carcass structure; and shaping the carcass structure into a toroidal configuration to engage the belt structure with the carcass structure, wherein a pair of sidewalls, each extending until close to a radially internal edge of the carcass structure, are laterally applied to the carcass structure on opposite sides, wherein the sidewalls are applied on the primary drum before shaping the carcass structure, and wherein during said step of assembling said belt structure, at least one underbelt insert is associated with said at least one belt layer at a radially internal position, by: wherein an angular rotation is imposed to said at least one underbelt insert concurrently with the radial-expansion step, whereby the axially internal portion is oriented substantially parallel to an inner surface of the belt structure and the axially external portion is oriented tapering towards a rotational axis of the tyre in consequence of said angular rotation.