公开(公告)号：US20240269911A1

公开(公告)日：2024-08-15

申请号：US18421618

申请日：2024-01-24

申请人： WIMAO OY

发明人： Ville IMMONEN ,  Timo KÄRKI ,  Jarmo MALINEN ,  Pekka MIROLA ,  Jussi VARIS

IPC分类号： B29C48/50 ,  B29C48/285 ,  B29C48/38 ,  B29C48/395 ,  B29C48/40 ,  B29C48/525 ,  B29C48/535 ,  B29C48/595 ,  B29C48/76 ,  B29C48/80 ,  B29K105/26

CPC分类号： B29C48/501 ,  B29C48/288 ,  B29C48/38 ,  B29C48/397 ,  B29C48/40 ,  B29C48/525 ,  B29C48/535 ,  B29C48/595 ,  B29C48/761 ,  B29C48/766 ,  B29C48/832 ,  B29K2105/26

摘要： A system for extrusion of material, for example chopped waste plastic, comprises a treatment device (101) for extruding the material and a feeder device (102) comprising a screw conveyor (103) for supplying the material to the treatment device. A screw element (104) of the screw conveyor has: a) a conical profile so that a diameter of the screw element decreases in a moving direction of the material and/or b) a thread-pitch decreasing in the moving direction of the material and/or c) an axial thickness of a screw thread crest increasing in the moving direction. The conical profile of the screw element and/or the thread-pitch decreasing in the moving direction and/or the axial thickness of the screw thread crest increasing in the moving direction improve the ability of the screw conveyor to compact the material and thereby to supply a sufficiently uniform material flow to the treatment device.