{
  "$type": "site.standard.document",
  "description": "The invention provides a base tire manufacturing method and a base tire having a proper thickness for the rubber layer by setting the thickness of the rubber layer in such a manner as to optimize the buffing allowance for the cure-molded base tire without placing limits on the shape of the…",
  "path": "/patents/960491",
  "publishedAt": "2015-06-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B29D30/52",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "The invention provides a base tire manufacturing method and a base tire having a proper thickness for the rubber layer by setting the thickness of the rubber layer in such a manner as to optimize the buffing allowance for the cure-molded base tire without placing limits on the shape of the post-buffing base tire. The base tire thus manufactured has a belt layer, an outermost rubber layer of a predetermined width disposed over the belt layer for application of a tread therto, and edge rubber members at both axial ends of the outermost rubber layer. For this base tire, the loss tangent (tan ´) of the outermost rubber layer is set lower than the loss tangent (tan ´) of the edge rubber members, the pre-buffing thickness A1 at the equator of the outermost rubber layer is set at \"post-buffing thickness A2 X 150%\" or less, and the post-buffing thickness A2 is set in a range of 1 mm to 3.5 mm.",
  "title": "BASE TIRE MANUFACTURING METHOD"
}