Molding element for a tire mold comprising a porous area
AssigneesCompagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
InventorsRomain CALVEL, Etienne BLANCHET
Life of this patent
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Abstract
A molding element for a tire mold manufactured from a metallic powder fused together layer by layer. The molding element contains a first surface intended to mold all or part of a tread surface of the tire and a second surface opposite to the first surface and intended to be in contact with another part of the mold. The thickness (E) of the molding element is between 1 and 6 millimetres. The molding element overall has a density greater than or equal to 98%. The molding element also contains at least one first porous area extending into the thickness of this molding element, this first porous area having a plurality of pores allowing air to pass between the first surface of the molding element and the second surface thereof.
Claims5
A molding element for a tire mold manufactured from a metallic powder fused together layer by layer, the molding element comprising:
- a first surface adapted to mold all or part of a tread surface of the tire,
- a second surface opposite to the first surface and adapted to be in contact with another part of the mold,
- wherein the thickness (E) of the molding element between 1 and 6 millimetres, the molding element overall having a density greater than or equal to 98%, and
- at least one first porous area extending into the thickness of this molding element, this first porous area comprising a plurality of pores allowing air to pass between the first surface of the molding element and the second surface thereof.
A method for the layer-by-layer manufacture of a molding element for a tire mold, the molding element comprising a first surface adapted to mold all or part of a tread surface of the tire and a second surface opposite to the first surface and adapted to be in contact with another part of the mold, the thickness of the molding element being between 1 and 6 millimetres, the molding element overall having a density greater than or equal to 98%, the method of manufacture comprising a plurality of steps of applying layers of metallic particles and of agglomerating all or some of the particles of these layers by fusion, wherein for each of the layers of the molding element, a porous part is created during the step of agglomerating the particles, the porous parts of the various layers of the molding element being superposed with one another to form a continuous porous area extending into the thickness of the molding element.
Dependencies are inferred from the claim text.