Resin that has been previously molded and ground into small pieces for reprocessing. Regrind is usually comprised of sprues, runners and unfilled parts. Found on http://www.blowmachines.com/glossary1.htm
Plastic waste material, such as sprues, runners and reject parts, which has been recycled by shredding or granulating. Regrind is usually mixed with virgin compound at a predetermined percentage for remolding. Found on http://www.oafe.net/articulation/terms.php