| 摘要 |
PURPOSE:To obtain a sealed lead-acid battery of high durability even in high temperature application environment by impregnating polymeric polyethylene resin in a thermoplastic resin film. CONSTITUTION:Polymeric polyethylene having molecular weight of approximately 0.1 to 1 million is blended with a part of a high density polyethylene resin (HDPE) film. In addition, a HDPE film containing a less molecular weight component and having a melt index of 0.1 to 1.5 (g/10 min) is used. By using an HDPE film of higher acid resistance as aforementioned, the crack thereof can be prevented. |
