{
  "$type": "site.standard.document",
  "description": "A manufacturing method of a pneumatic tire in which a tread rubber (10) formed by a nonconductive rubber is arranged in a tread portion (3), and a conductive portion (13) which is formed by a conductive rubber and reaches a carcass layer (7) or a belt layer (6) from a ground surface is buried in…",
  "path": "/patents/1000989",
  "publishedAt": "2012-06-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B29D30/38",
    "TOYO TIRE & RUBBER CO [JP]"
  ],
  "textContent": "A manufacturing method of a pneumatic tire in which a tread rubber (10) formed by a nonconductive rubber is arranged in a tread portion (3), and a conductive portion (13) which is formed by a conductive rubber and reaches a carcass layer (7) or a belt layer (6) from a ground surface is buried in the tread rubber (10), wherein a step of forming the carcass layer (7) includes a step of forming a strip-like carcass ply (20) by coating a plurality of carcass cords (21) which are arranged in parallel, with a topping rubber (22) constructed by a nonconductive rubber portion (22a) which is along an extending direction of the carcass cord (21), and a conductive rubber portion (22b) which is narrower than the nonconductive rubber portion (22a), and a step of lining up a lot of the strip-like carcass plies (20) in a ply width direction so as to bond the strip-like carcass plies (20) sequentially.",
  "title": "Manufacturing method of a pneumatic tire and pneumatic tire obtained thereby."
}