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US 2017/0291453 A1Published application
Airless tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsMakoto SUGIYA, Wako IWAMURA
Life of this patent
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Abstract
An airless tire has a tread ring provided with a reinforcing rubber layer disposed radially inside a tread rubber layer and made of a rubber compound [A] comprising: 100 parts by mass of the rubber component containing 10 to 100% by mass of butadiene rubber; 10 to 80 parts by mass of an metal salt of an alpha beta unsaturated carboxylic acid; and a peroxide. A barrier layer, which restrains sulfur in an adjacent rubber compound from migrating into the reinforcing rubber layer, is disposed between the reinforcing rubber layer and the adjacent rubber compound.
Claims11
An airless tire comprising
- a cylindrical tread ring forming a ground contacting surface of the tire,
- a hub disposed radially inside the tread ring and fixed to an axle of a vehicle, and
- spokes connecting the tread ring and the hub,
- wherein
- the tread ring comprises a tread rubber layer forming the ground contacting surface of the tire, and a reinforcing rubber layer disposed radially inside the tread rubber layer,
- the reinforcing rubber layer is made of a rubber compound [A] comprising:
- 100 parts by mass of a rubber component containing 10 to 100% by mass of butadiene rubber;
- 10 to 80 parts by mass of a metal salt of an alpha beta unsaturated carboxylic acid;
- and a peroxide,
- an adjacent rubber compound, which is made from a sulfur-vulcanized rubber compound using sulfur as a vulcanizing agent, is disposed adjacent to the reinforcing rubber layer, and
- a barrier layer, which is formed from a rubber-based adhesive or a resin-based adhesive and restrains a part of the sulfur in the adjacent rubber compound from migrating into the reinforcing rubber layer during vulcanization, is disposed between the reinforcing rubber layer and the adjacent rubber compound.
8 more elements
Dependencies are inferred from the claim text.