(19)

(11)

EP 3 721 026 A1

(12)

(43) Date of publication: 14.10.2020 Bulletin 2020/42 (21) Application number: 17811909.5 (22) Date of filing: 04.12.2017

(51) International Patent Classification (IPC):  E04C 2/34(2006.01) (86) International application number: PCT/EP2017/081411 (87) International publication number: WO 2019/110085 (13.06.2019 Gazette 2019/24)

(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: MA MD TN (71) Applicant: V-Fold Group BVBA 2960 Brecht (BE)	(72) Inventors: PEETERS, Ivan 9120 Beveren-Waas (BE) BRANDS, Ludo 2018 Antwerpen (BE) (74) Representative: Brantsandpatents bvba  Pauline Van Pottelsberghelaan 24 9051 Ghent 9051 Ghent (BE)