(19)

(11)

EP 3 768 481 A1

(12)

(43) Date of publication: 27.01.2021 Bulletin 2021/04 (21) Application number: 19719375.8 (22) Date of filing: 20.03.2019

(51) International Patent Classification (IPC):  B28D 7/04(2006.01) B28B 23/00(2006.01) (86) International application number: PCT/IT2019/050061 (87) International publication number: WO 2019/180757 (26.09.2019 Gazette 2019/39)

(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: 20.03.2018 IT 201800003764 (71) Applicant: Sfera S.R.L. 54100 Massa (MS) (IT)	(72) Inventor: TONGIANI, Stefano 54100 MASSA (MS) (IT) (74) Representative: Santi, Filippo et al Barzanò & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)