(19)

(11)

EP 3 307 943 A1

(12)

(43) Date of publication: 18.04.2018 Bulletin 2018/16 (21) Application number: 16733698.1 (22) Date of filing: 10.06.2016

(51) International Patent Classification (IPC):  D21F 1/00(2006.01) (86) International application number: PCT/IB2016/053442 (87) International publication number: WO 2016/199092 (15.12.2016 Gazette 2016/50)

(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 (30) Priority: 11.06.2015 IT UB20151347 (71) Applicant: FELTRI MARONE S.p.A. 20145 Milano (IT)	(72) Inventor: ROSSETTI, Clara 25054 Marone (IT) (74) Representative: Cernuzzi, Daniele et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)