(19)

(11)

EP 3 634 916 A1

(12)

(43) Date of publication: 15.04.2020 Bulletin 2020/16 (21) Application number: 18729207.3 (22) Date of filing: 16.05.2018

(51) International Patent Classification (IPC):  C02F 3/04(2006.01) C02F 103/44(2006.01) C02F 3/30(2006.01) C02F 3/10(2006.01) (86) International application number: PCT/IB2018/053423 (87) International publication number: WO 2018/215888 (29.11.2018 Gazette 2018/48)

(84) Designated Contracting States: 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 States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 22.05.2017 BE 201705370 (71) Applicant: Rietland BVBA 2322 Minderhout (BE)	(72) Inventor: VAN OIRSCHOT, Dionysius Cornelius Antonius Maria 2322 Minderhout (BE) (74) Representative: Philippaerts, Yannick et al Arnold & Siedsma Bezuidenhoutseweg 57 2594 AC The Hague 2594 AC The Hague (NL)