Compagnie Generale Des Etablissements Michelin

Hélène Jaquet

Olivier Muhlhoff

Walid Djabour

Romain Calvel

Etienne Blanchet

Frédéric Massis

Dominique Leblanc

Pascal Goumault

Florent Monbrun

Alexis Treilhes

A method for depositing at least one colored layer on the surface of a vulcanized tire sidewall includes applying by inkjet a colored layer to the whole of the sidewall or to at least a part of the sidewall of the tire and then, after drying, selectively removing the colored layer in such a manner as to create a first pattern. A tire obtained on completion of that method is also disclosed.

Method for depositing a colored layer on a tire

A drum is provided for building a green tire casing. The drum includes sectors, an expander, and an adjuster. The sectors form a circumferential face of the drum. The expander moves the sectors in a radial direction such that, at any given time, all the sectors extend at a same distance from an axis of the drum. The adjuster moves the sectors in the radial direction separately from movement of the sectors caused by the expander. Movement of the sectors by the adjuster is such that, at any given time, all the sectors extend at an equal distance from the axis of the drum. The expander is usable to move the sectors regardless of a position of the sectors caused by an operation of the adjuster.

Drum for producing a tire blank

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Clermont-Ferrand, France

Hélène Jaquet