Pneumatic tyre with built-in self-sealing and protective layers
AssigneesCompagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
InventorsMarc Greiveldinger, Jose Merino Lopez, Michel Ahouanto, Frédéric Pialot
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Abstract
A pneumatic tire with a built-in self-sealing layer is described. The tire includes an outer rubbery tread, a carcass reinforcement, a gastight layer located at an inside position relative to the carcass reinforcement, a protective layer positioned innermost, and a self-sealing layer adjacent to the protective layer and located at an inside position relative to the gastight layer. The protective layer is a chlorinated thermoplastic polymer film.
Claims19
A pneumatic tire with built-in self-sealing layer, the tire comprising:
- an outer rubbery tread;
- a carcass reinforcement;
- a gastight layer located at an inside position relative to the carcass reinforcement;
- a protective layer;
- and
- a self-sealing layer adjacent to the protective layer and located at an inside position relative to the gastight layer,
- wherein the protective layer is located innermost relative to the carcass reinforcement, the gastight layer, and the self-sealing layer,
- wherein a thickness of the protective layer is between 7 and 50 micrometers, and
- wherein the protective layer is a film formed of at least a chlorinated thermoplastic polymer that includes a plasticizing additive chosen from the group consisting of ethylene/vinyl acetate copolymers, polybutenes, polyesters, vinyl chloride/vinyl acetate copolymers, mellitates, triallyl cyanurate, epoxidized oils, crosslinkable acrylic compounds, and mixtures thereof.
Dependencies are inferred from the claim text.