METHOD AND SYSTEM FOR APPLYING A LAYER OF SOUNDABSORBING MATERIAL TO THE SURFACE OF AN INNER CAVITY OF A PNEUMATIC TYRE

A method and a system (1) for applying a layer (2) of sound-absorbing material to the inner surface (3) of a cavity (4) of a pneumatic tyre (5) comprising an applicator device (9) having an applicator roller (10) for implementing the 5 application of the layer (2) of sound-absorbing material to the inner surface (3) after the removal of a lining (8) and arranged, in use, at a position directly facing and in proximity to said inner surface (3) and at a distance from the inner surface (3) that substantially approximates the thickness of the layer (2) of sound-absorbing material; a roller (11) for winding the lining (8) after the 10 separation from the layer (2) of sound-absorbing material; and synchronization means (13) implemented by means of a transmission member (14) in order to make it possible to maintain substantially uniform the speed of the applicator roller (10) and the winding roller (11).