{
  "$type": "site.standard.document",
  "description": "A manufacturing method using a rigid core, wherein high-speed endurance performance is enhanced while breakage of band cords is suppressed. This method for manufacturing a pneumatic tire includes a green tire formation process for forming a green tire by affixing ti re-consti tuti ng members in…",
  "path": "/patents/969389",
  "publishedAt": "2014-10-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B29B15/08",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A manufacturing method using a rigid core, wherein high-speed endurance performance is enhanced while breakage of band cords is suppressed. This method for manufacturing a pneumatic tire includes a green tire formation process for forming a green tire by affixing ti re-consti tuti ng members in sequence to a rigid core. The green ti re formation process includes a band ply formation step for winding a ribbon-shaped strip in which a band cord sequence is coated with a topping rubber into a helical shape. The band cord comprises a composite cord in which first strands of aramid fiber and second strands of heat-shrinkable organic fiber are twisted together. The stress-elongation curve of the composite cord has a low-elasticity region from the origin to the inflection point, and a high-elasticity region past the inflection point. The elongation of the composite cord is in the range of 0.9-3.3% at the inflection point, and the modulus of the composite cord is in the range of 11-31 N/% in the low-elasticity region.",
  "title": "METHOD FOR MANUFACTURING PNEUMATIC TIRE"
}