公开(公告)号：EP4304996A1

公开(公告)日：2024-01-17

申请号：EP22709767.2

申请日：2022-03-10

申请人： Wimao Oy

发明人： OLKKONEN, Veikko ,  VARIS, Jussi ,  MIROLA, Pekka ,  MALINEN, Jarmo ,  HÖIJER, Juha ,  VARIS, Juha ,  KÄRKI, Timo ,  IMMONEN, Ville

IPC分类号： C03B3/00 ,  F27B9/00 ,  B09B3/00 ,  B09B5/00

公开(公告)号：EP4417395A1

公开(公告)日：2024-08-21

申请号：EP23156690.2

申请日：2023-02-15

申请人： Wimao Oy

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

IPC分类号： B29C48/385 ,  B29C48/40 ,  B29C48/53 ,  B29C48/535 ,  B29C48/595 ,  B29C48/525 ,  B29C48/38 ,  B29B7/40 ,  B29B7/42

CPC分类号： B29B7/407 ,  B29B7/424 ,  B29C48/385 ,  B29C48/38 ,  B29C48/525 ,  B29C48/53 ,  B29C48/535 ,  B29C48/404 ,  B29C48/595

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.