The polyethylene PE. used in separators for automotive leadracid batteries is actually UHMW-PE ultra high molecular weight
polyethylene.. Microporous PE separators were commercialized in the early 1970s. Since then, they have gained in popularity in the
leadracid battery industry, particularly in SLI starting, lighting and ignition. automotive applications. This paper provides an
introductory overview of the UHMW-PE polymer and its contributions to the PE battery separator manufacturing process, battery
assembly and battery performance, in comparison with other conventional separators such as polyvinyl chloride PVC. and glass fibre