<http://schema.org/description>
"In most cases, screw cooling will benefit the process by giving the operator another \u201Czone\u201D of control on the extruder. The main theory of \u201Csolids conveying\u201D is that the resin must \u201Cstick to the barrel\u201D and \u201Cslip on the screw.\u201D By cooling the root of the screw, it will reduce the coefficient of friction between the steel of the screw and the plastic pellet. By cooling the root of the screw, it will reduce the coefficient of friction between the steel of the screw and the plastic pellet."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ptonline.com/tips/post/screw-cooling>