(19)

(11)

EP 3 303 671 A1

(12)

(43) Date of publication: 11.04.2018 Bulletin 2018/15 (21) Application number: 16735687.2 (22) Date of filing: 26.05.2016

(51) International Patent Classification (IPC):  D04B 15/78(2006.01) D04B 15/68(2006.01) D04B 15/32(2006.01) (86) International application number: PCT/IB2016/053090 (87) International publication number: WO 2016/193870 (08.12.2016 Gazette 2016/49)

(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: 29.05.2015 IT UB20150954 (71) Applicant: SANTONI S.p.A. 25135 Brescia (IT)	(72) Inventors: LONATI, Ettore 25082 Botticino (BS) (IT) LONATI, Fausto 25123 Brescia (IT) LONATI, Andrea 25123 Brescia (IT) (74) Representative: Brasca, Marco  PGA S.p.A. Via Mascheroni, 31 20145 Milano 20145 Milano (IT)