{
  "$type": "site.standard.document",
  "description": "A mandrel member (100) of a winder for a secondary battery, which is mounted in a winder configured to manufacture a jelly roll-type electrode assembly by winding a stack of a first electrode plate (21), a separator (22), and a second electrode plate (23), the mandrel member (100) comprising a…",
  "path": "/patents/1386244",
  "publishedAt": "2026-03-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B65H18/10",
    "SAMSUNG SDI CO LTD [KR]"
  ],
  "textContent": "A mandrel member (100) of a winder for a secondary battery, which is mounted in a winder configured to manufacture a jelly roll-type electrode assembly by winding a stack of a first electrode plate (21), a separator (22), and a second electrode plate (23), the mandrel member (100) comprising a cylindrical body having a hollow portion (120), wherein the cylindrical body includes a plurality of slits (110) crossing the cylindrical body in a hollow axis direction so that the hollow portion (120) inside the cylindrical body is in fluid communication with the outside of the cylindrical body.",
  "title": "MANDREL MEMBER OF WINDER FOR SECONDARY BATTERY"
}