Multilayer laminate which can be used for the reinforcement of a tyre belt
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsJean-Michel Huyghe, Christophe Le Clerc, Aline Riou, Anne-Lise Thuilliez
Life of this patent
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Abstract
A multilayer laminate, which is usable as a reinforcing element for a finished article or for a semifinished product made of rubber, such as a tire, includes at least one polymer film having, in any tensile direction in the film's plane, a Young's modulus that is greater than 500 MPa. The film is positioned between and in contact with two layers formed of a rubber composition, such as natural rubber. Each layer formed of the rubber composition exhibits, in a crosslinked state, a secant modulus that, in extension at 10% elongation, is greater than 30 MPa, with between 30 and 150 MPa being preferable for the secant modulus.
Claims17
A tyre comprising a multilayer laminate,
- wherein the multilayer laminate includes at least one polymer film,
- wherein each polymer film has a Young's modulus E, in any tensile direction in a plane of the film, greater than 500 MPa,
- wherein each polymer film is positioned between and in contact with two layers formed of a rubber composition, and
- wherein each layer formed of the rubber composition exhibits, in a crosslinked state, a secant modulus Ms, in extension at 10% elongation, greater than 40 MPa.
Dependencies are inferred from the claim text.