{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "To provide a pneumatic tire excellent in steering stability and fuel efficiency at high-speed driving, .it is provided a pneumatic tire having a tread portion with a circumferential groove and a belt layer, wherein a monofilament cord is used as a reinforcing cord for the belt layer; the number of…",
  "path": "/patents/1408809",
  "publishedAt": "2023-08-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0008",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "To provide a pneumatic tire excellent in steering stability and fuel efficiency at high-speed driving, .it is provided a pneumatic tire having a tread portion with a circumferential groove and a belt layer, wherein a monofilament cord is used as a reinforcing cord for the belt layer; the number of arrangements e (lines/5 cm) of the monofilament cords arranged per 5 cm in the tire width direction in the tire radial cross section of the belt layer is 50/5 cm or more; and the distance G (mm) from the surface of the land portion closest to the equatorial plane among land portions separated by the circumferential groove to the monofilament cord, and the loss tangent (30°Ctan δ) when the rubber composition constituting the surface of the tread portion is measured under conditions of temperature: 30°C, initial strain: 5%, dynamic strain: ±1%, frequency: 10Hz, and deformation mode: tensile, satisfy 30°Ctan δ × G < 1.5.",
  "title": "PNEUMATIC TIRE"
}