| 摘要 |
PROBLEM TO BE SOLVED: To keep sealing reliability, by using a bag composed of maleic acid modified polyolefin, as the seat sealing portion of a bag, for taking out outside electrode lead wires, and sealing these lead wires. SOLUTION: A sealing bag 3 is manufactured by fusing the insulator 12 of the innermost layer on the inner side of the sealing bag, for housing positive and negative electrodes, a diaphragm, and an electrolyte, and being contacted directly. The sealing bag and a lead wire are integrated by fusing the insulator 12 of the enclosing bag, and the lead wire is taken out outside, and while is connected to the positive and negative electrodes respectively in the inside of the sealing bag. Here, maleic acid modified polyorefin is used to the innermost layer 12 of the sealing bag, and a seat sealing part is constituted of the maleic acid modified polyorefin, thereby sealing characteristic notably being improved. Also, the airtightness, between the conductor of the lead wire and the insulator, can be kept, to keep sealing reliability despite the lead wire is taken out outside the sealing bag, by providing the maleic acid modified polyorefine layer 10 onto direct above the conductor of the lead wire 1. |
