EP 3681686 A1 20200722 - METHOD AND DEVICE FOR THERMAL ROUNDING OR SPHERONISATION OF POWDERED PLASTIC PARTICLES
Title (en)
METHOD AND DEVICE FOR THERMAL ROUNDING OR SPHERONISATION OF POWDERED PLASTIC PARTICLES
Title (de)
VERFAHREN UND VORRICHTUNG ZUR THERMISCHEN VERRUNDUNG BZW. SPHÄRONISIERUNG VON PULVERFÖRMIGEN KUNSTSTOFFPARTIKELN
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR L'ARRONDISSEMENT OU LA SPHÉRONISATION THERMIQUE DE PARTICULES PLASTIQUES PULVÉRULENTES
Publication
Application
Priority
- DE 102017121048 A 20170912
- EP 2018073137 W 20180828
Abstract (en)
[origin: WO2019052806A1] The invention relates to a method for shaping a starting material (20) of powdered plastic particles, said method having the following method steps: a) providing powdered plastic particles as starting material (20); b) heating the plastic particles in a first treatment space to a first temperature (T1) below the melting point of the plastic, the first temperature (T1) being determined such that the plastic particles do not yet stick to one another; c) transferring a directed current of the plastic particles thus heated into a second treatment space (42); d) heating the plastic particles in the second treatment space (42) to a second temperature (T2) above the melting point of the plastic; and e) cooling the plastic particles to a temperature below the first temperature (T1).
IPC 8 full level
CPC (source: EP KR US)
B01J 2/04 (2013.01 - EP KR); B01J 2/16 (2013.01 - US); B29B 9/16 (2013.01 - EP KR US); B29B 2009/166 (2013.01 - EP KR US); B29C 64/314 (2017.07 - US); B33Y 40/10 (2020.01 - US)
Citation (search report)
See references of WO 2019052806A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019052806 A1 20190321; AU 2018331782 A1 20200305; CA 3072305 A1 20190321; CN 111065502 A 20200424; EP 3681686 A1 20200722; JP 2020533194 A 20201119; KR 20200035275 A 20200402; TW 201934293 A 20190901; US 2020282601 A1 20200910
DOCDB simple family (application)
EP 2018073137 W 20180828; AU 2018331782 A 20180828; CA 3072305 A 20180828; CN 201880058888 A 20180828; EP 18762071 A 20180828; JP 2020509024 A 20180828; KR 20207004712 A 20180828; TW 107130646 A 20180831; US 201816645616 A 20180828