{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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  "description": "A power storage device packaging material having a structure including at least a substrate layer, an adhesive layer, a metal foil layer, a sealant adhesive layer, and a sealant layer laminated in this order. The substrate layer is formed of a polyester film exhibiting ΔA, as expressed by the…",
  "path": "/patents/1240862",
  "publishedAt": "2019-08-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M2/0287",
    "TOPPAN PRINTING CO., LTD."
  ],
  "textContent": "A power storage device packaging material having a structure including at least a substrate layer, an adhesive layer, a metal foil layer, a sealant adhesive layer, and a sealant layer laminated in this order. The substrate layer is formed of a polyester film exhibiting ΔA, as expressed by the following formula, of 10% or more and a 50% elongation stress of 75 MPa or more after heat treatment at 160° C.: “ΔA=(break elongation after 160° C. heat treatment)−(break elongation before 160° C. heat treatment)”.",
  "title": "POWER STORAGE DEVICE PACKAGING MATERIAL AND POWER STORAGE DEVICE USING THE PACKAGING MATERIAL"
}