| 摘要 |
PURPOSE:To sharply strengthen resistance against leakage of liquid, especially the resistance against leakage of liquid from the room temperature to a high temperature by using a mixture of asphalt, epoxy resin and polybutene not containing a hardening agent of epoxy resin, as a sealing agent. CONSTITUTION:Sealing agents 26 and 26 are respectively interposed between the outer peripheries of a gasket 14 and a cathode terminal plate 12 and the opening part inside of the anode can 10, while the sealing interface formed by the pressing contact of the gasket 14 with the metal surface is strengthened by the sealing agents 26 and 26 interposed on said sealing interface. As said sealing agent 26, a mixture consisting of three substances such as asphalt, polybutene and epoxy resin is used, while said mixture is applied on the outer periphery of the cathode terminal plate 12 and inside the opening part of the anode can 10. As to said sealing agent 26 consisting of asphalt, epoxy resin and polybutene, its sealing effect is fully shown without going down not only in the normal temperature but also under the surroundings of a high temperature. |
