Perforated plate for submerged plastics granulator, includes guide cones made of material with higher thermal conductivity than that of plate

摘要

The melt guide cone (3) is thermally-conductive, consisting of a second material having greater thermal conductivity than that of the plate (2). The cone (3) is bolted (4) into a bore (5) of the plate. The bolt diameter is at least 40%, preferably 80% or more, of the spacing between two opposite nozzles (6) on either side of the center. The bolt is a stud formed on the guide cone. Plate (2) thickness at the base (8) of the bore is less than 20% of the bolt length. The bore is alternatively a through passage. Bolt and bore are threaded. The cone includes a screw-locking (or anti-shake) surface. The cone accommodates one or more heat pipes (10).