Method and apparatus for making spiral separators

摘要

An aluminum mold for the interior surfaces of one or more spirals is rotated at a temperature sufficient to melt a weldable plastic such as LLDP or HDP plastic in a predetermined amount sprinkled thereon. Plastic powder not melted is recovered and redeposited until all the plastic powder is melted. The mold or molds are then cooled and the formed spiral is removed.