| 摘要 |
<p>A screw for a multiple screw extruder comprises at least two conveying sections for transporting a composition comprising a polymeric resin from the feed end to the discharge end of the extruder; and at least two mixing sections comprising screw elements having two or more flights, wherein the ratio of the length to diameter ratio of the sum of the mixing sections to the length to diameter ratio of the screw is 0.17 to 0.5 and wherein the conveying sections are separated by at least one mixing section.</p> |
