{
  "$type": "site.standard.document",
  "description": "[Problem] A separator for a valve-regulated lead acid battery that has suppressed losing the thickness (reduction of compressive force) of the separator and prolonged a cycle lifetime is provided. [Solution] The separator for a valve-regulated lead acid battery includes a sheet formed through wet…",
  "path": "/patents/1290368",
  "publishedAt": "2021-05-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/44",
    "Nippon Sheet Glass Company, Limited"
  ],
  "textContent": "[Problem] A separator for a valve-regulated lead acid battery that has suppressed losing the thickness (reduction of compressive force) of the separator and prolonged a cycle lifetime is provided. [Solution] The separator for a valve-regulated lead acid battery includes a sheet formed through wet papermaking mainly containing glass fibers, and has an MD/CD strength ratio shown by the following expression (1) of 1.5 or less and 60 kPa compressive force in liquid immersion shown by the following expression (2) of 65% or more: MD/CD strength ratio=MD strength/CD strength (Expression 1) 60 kPa compressive force in liquid immersion (%) (pressure force after liquid immersion/compressive force in liquid immersion)×100 (Expression 2)",
  "title": "SEPARATOR FOR LEAD ACID BATTERY"
}