(19)

(11)

EP 2 771 513 A1

(12)

(43) Date of publication: 03.09.2014 Bulletin 2014/36 (21) Application number: 12779027.7 (22) Date of filing: 22.10.2012

(51) International Patent Classification (IPC):  E01C 13/02(2006.01) E01C 13/08(2006.01) (86) International application number: PCT/EP2012/070837 (87) International publication number: WO 2013/060634 (02.05.2013 Gazette 2013/18)

(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 (30) Priority: 28.10.2011 EP 11187008 15.02.2012 EP 12155513 (71) Applicant: Bonar B.V. 6827 AV Arnhem (NL)	(72) Inventor: VAN VLIET, Arie, Hendrik, Frans "deceased" (NL) (74) Representative: Oberlein, Gerriet H. R.  CPW GmbH Kasinostraße 19-21 42103 Wuppertal 42103 Wuppertal (DE)