Separator material for storage batteries and method for making the same.
摘要
<p>The invention relates to separator materials which are adapted for use in storage batteries and which comprise a fabric sheet of polyolefin resin fibers and a surface layer of a polyolefin resin sulfonated to such an extent that sulfone groups are formed in an amount sufficient to impart an appropriate degree of hydrophilicity. The surface layer is formed on individual resin fibers. The separator materials are effective in suppressing self discharge when applied as a separator of batteries of the open or sealed type. The methods of making the separator material are also described.</p>
