(19)

(11)

EP 3 946 926 A1

(12)

(43) Date of publication: 09.02.2022 Bulletin 2022/06 (21) Application number: 20717301.4 (22) Date of filing: 25.03.2020

(51) International Patent Classification (IPC):  B32B 3/30(2006.01) B32B 5/02(2006.01) B32B 5/26(2006.01) B32B 7/14(2006.01) A61F 13/49(2006.01) B32B 5/22(2006.01) B32B 7/08(2019.01) B32B 27/12(2006.01) (52) Cooperative Patent Classification (CPC): B32B 5/26; B32B 2307/726; B32B 7/08; B32B 7/14; B32B 2307/724; B32B 27/12; B32B 2307/7265; B32B 5/22; B32B 5/022; B32B 2307/51; B32B 2255/02; B32B 2250/03; A61F 13/4902; B32B 3/30 (86) International application number: PCT/IB2020/052799 (87) International publication number: WO 2020/201919 (08.10.2020 Gazette 2020/41)

(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: 29.03.2019 JP 2019067630 (71) Applicant: 3M Innovative Properties Company Saint Paul, Minnesota 55133-3427 (US)	(72) Inventor: KUNIHIRO, Kioshi Tokyo 141--8684 (JP) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstraße 4 81675 München 81675 München (DE)