| 摘要 |
PURPOSE:To improve the liquid leak proof of a cell, by using as a gasket for a sealed portion nylon 6, nylon 66 or nylon 610 having a crystallization degree in a specific range. CONSTITUTION:A positive electrode compound 2 is filled into a positive electrode can 1, and on top of this compound a separator 3 is placed. Then a negative electrode terminal plate 5, in which a negative electrode compound 4 is filled, is fitted into the opening of the positive electrode can 1 by interposing an annular gasket 6 made of a synthetic resin and having an L-shaped cross section. This unit is hermetically sealed to construct a button-shaped cell. For the gasket 6 of said cell, nylon 6, nylon 66 or nylon 610 may be used after adjusting its crystallization degree to a range of 40-60% through heat treatment. |
