| 摘要 |
PURPOSE:To provide a sealing material which seals air supply holes of a button type zinc air cell to give a good storage life by using as a sealing material a double sheet formed by combining a resin sheet mainly comprising polyester or polypropylene with humidity-proof resin impregnated paper. CONSTITUTION:A sealing material is formed with a sticking layer 11-1, humidity-proof paper obtained by impregnating polypropylene, and a polyester sheet 11-3, and the sticking layer 11-1 is sticked to a positive case 1. Sealing performance of this sealing material at high humidity is substantially improved compared with that of the sealing material obtained by combining a polyester sheet and paper not impregnating resin, and capacity deterioration is also improved. Resin used to impregnate in paper is polyester, fluorine resin, polyester, and others. |
