Single-screw extruder and method for extrusion

Hannu Minkkinen (Inventor), Juha Mannila (Inventor)

    Research output: PatentPatent


    A single-screw extruder (100) and method. The extruder comprises a cylindrical rotor member, the rotor member (1) arranged in a barrel (2), and a drive system (4) for the rotation of the rotor member (1) in the barrel (2). The extruder further comprises an outlet (16) of the extruder is provided with a die (23), comprising an outer ring (24) arranged to the barrel (2),an inner die part (25), the die (23) establishing a flow channel (26) that is continuously circular in all its cross-sections.

    Patent family as of 27.12.2021
    EP3908442 A1 20211117 EP20200701834 20200110      
    FI128422 B 20200430 FI20190005016 20190111      
    FI20195016 A 20200430 FI20190005016 20190111      
    IN202117035965 A 20211119 IN202117035965 20210809      
    WO20144407 A1 20200716 WO2020FI50017 20200110

    Link to current patent family on right 

    Original languageEnglish
    Patent numberFI20195016
    IPCB30B 11/ 24 A I
    Priority date11/01/19
    Publication statusPublished - 30 Apr 2020
    MoE publication typeH1 Granted patent


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