{
  "$type": "site.standard.document",
  "description": "The present invention relates to a porous membrane including cellulose fibers, wherein the cellulose fibers are obtained from a mixture of: more than 50% by weight of (1) first raw material cellulose fibers having a surface area determined by congo red coloring of 250 m/g or more and 500 m/g or…",
  "path": "/patents/983573",
  "publishedAt": "2013-10-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B29C44/02",
    "TOKUSHU TOKAI PAPER CO LTD [JP]"
  ],
  "textContent": "The present invention relates to a porous membrane including cellulose fibers, wherein the cellulose fibers are obtained from a mixture of: more than 50% by weight of (1) first raw material cellulose fibers having a surface area determined by congo red coloring of 250 m/g or more and 500 m/g or less; and less than 50% by weight of (2) second raw material cellulose fibers having a surface area determined by congo red coloring of 150 m/g or more and less than 250 m/g. The porous membrane according to the present invention can provide a separator for electrochemical devices with superior properties, at a reasonable cost.",
  "title": "MICROPOROUS FILM AND MANUFACTURING METHOD THEREFOR"
}