(19)

(11)

EP 3 707 301 A1

(12)

(43) Date of publication: 16.09.2020 Bulletin 2020/38 (21) Application number: 18800155.6 (22) Date of filing: 09.11.2018

(51) International Patent Classification (IPC):  D04H 1/4291(2012.01) D04H 1/435(2012.01) D04H 1/728(2012.01) D04H 1/4334(2012.01) D04H 1/4358(2012.01) (86) International application number: PCT/EP2018/080724 (87) International publication number: WO 2019/092166 (16.05.2019 Gazette 2019/20)

(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: 10.11.2017 EP 17201061 (71) Applicant: EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt 8600 Dübendorf (CH)	(72) Inventors: DOMASCHKE, Sebastian 8600 Dübendorf (CH) EHRET, Alexander 79713 Bad Säckingen (DE) (74) Representative: Schneider Feldmann AG Patent- und Markenanwälte  Beethovenstrasse 49 Postfach 8027 Zürich 8027 Zürich (CH)