{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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    "mimeType": "image/png",
    "size": 95678
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  "description": "Provided is a steel cord for reinforcing a rubber article which can further improve cut resistance when applied to a tire. Provided is a steel cord for reinforcing a rubber article including: one core strand having a layered-twisted structure formed by twisting a plurality of steel filaments ; and…",
  "path": "/patents/1240203",
  "publishedAt": "2019-08-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "D07B1/0613",
    "BRIDGESTONE CORPORATION"
  ],
  "textContent": "Provided is a steel cord for reinforcing a rubber article which can further improve cut resistance when applied to a tire. Provided is a steel cord for reinforcing a rubber article including: one core strand having a layered-twisted structure formed by twisting a plurality of steel filaments ; and a plurality of sheath strands having a layered-twisted structure formed by twisting a plurality of steel filaments , wherein the sheath strands are twisted around the core strand. A ratio S1/S of the sum S1 of cross-sectional areas of outermost layer sheath filaments constituting an outermost layer sheath of the core strand to the sum S of cross-sectional areas of all filaments constituting the core strand is from 0.69 to 0.74, and a ratio Ps/P of the sum Ps of strengths of the sheath strands to strength P of the cord as a whole is from 0.81 to 0.85.",
  "title": "STEEL CORD FOR REINFORCING RUBBER ARTICLE"
}