{
  "$type": "site.standard.document",
  "description": "To provide a piston ring which, when used in a high-output engine, can sustain an excellent effect of suppressing aluminum adhesion, over a long period. [0002] Either or both the upper and lower sides of the piston ring are covered with a resin-based film containing a fibrous filler with a mean…",
  "path": "/patents/977497",
  "publishedAt": "2014-03-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B32B15/08",
    "RIKEN KK [JP]"
  ],
  "textContent": "To provide a piston ring which, when used in a high-output engine, can sustain an excellent effect of suppressing aluminum adhesion, over a long period. [0002] Either or both the upper and lower sides of the piston ring are covered with a resin-based film containing a fibrous filler with a mean fiber diameter of 50 to 500 nm and an aspect ratio of 30 to 500. The fibrous filler content is 0.5 to 10 vol% with respect to the total resin-based film. Also, the fibrous filler used is at least one type from among carbon fibers, silica fibers and boron nitride fibers.",
  "title": "PISTON RING"
}