| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated structure for a cell packing material, composed of a barrier layer, a protection layer, an adhering resin layer, and a sealant, having good productivity and content-resistance. SOLUTION: The packing material, forming an envelop of a cell into which, the cell main body is inserted, and peripheral part is sealed up by heat seal, is a laminated body at least composed of a base material layer, an adhesion layer, aluminum, a chemical processing layer, an adhering resin layer, and a polypropylene group sealant layer. The adhering resin layer is made of acid- modification polypropylene resin with a melt index of 5-30, and a melt tension at 230 deg.C of not less than 0.5 cN. |
