Laminate based on silicone rubber compositions
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsMilan Fedurco, Marco Ribezzo, Antonio Delfino, Alain Faugeras
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Abstract
A laminate comprising a first layer and a second layer directly covering the first layer, the first layer being a layer of a silicone rubber composition comprising a micrometric silicone powder and a mixture of crosslinkable organopolysiloxanes, the second layer being a layer of a silicone rubber composition comprising a hydrophobic silica and a mixture of crosslinkable organopolysiloxanes, is provided. The first layer and the second layer are crosslinked. The laminate, in particular when it is used as a coating for the outer surface of an expandable bladder for a tire curing mold, makes it possible to eliminate molding defects on the inner liner of the tire.
Claims15
A laminate comprising a first layer, a second layer, and a third layer of a crosslinked diene rubber composition, the second layer directly covering the first layer and the third layer directly covering the second layer, the first layer being a layer formed from a first silicone rubber composition comprising a micrometric silicone powder and a first mixture of crosslinkable organopolysiloxanes, the second layer being a layer formed from a second silicone rubber composition comprising a hydrophobic silica, polyamide microparticles having a melting point above 100° C., and a second mixture of crosslinkable organopolysiloxanes, the first layer and the second layer being crosslinked, and the first layer not including the polyamide microparticles.
Dependencies are inferred from the claim text.