{
  "$type": "site.standard.document",
  "description": "A tyre includes a tread portion 2 including a first cap rubber layer 11 forming a ground contact surface 2s and having a loss tangent tan δ1, and a second cap rubber layer 12 disposed inwardly in a tyre radial direction of the first cap rubber layer 11 and having a loss tangent tan δ2, the loss…",
  "path": "/patents/1403503",
  "publishedAt": "2023-06-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0008",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A tyre includes a tread portion 2 including a first cap rubber layer 11 forming a ground contact surface 2s and having a loss tangent tan δ1, and a second cap rubber layer 12 disposed inwardly in a tyre radial direction of the first cap rubber layer 11 and having a loss tangent tan δ2, the loss tangent tan δ2 being greater than the loss tangent tan δ1. The tread portion 2 is provided with a plurality of sipes 15 opening to the ground contact surface 2s. The plurality of sipes 15, at least partially, extends inwardly in a tyre radial direction from the ground contact surface 2s to a location beyond a boundary16 between the first cap rubber layer 11 and the second cap rubber layer 12, and a maximum length L2 of the plurality of sipes 15 in the second cap rubber layer 12 is smaller than a length L1 of the plurality of sipes 15 at the ground contact surface2s.",
  "title": "TYRE"
}