(19)

(11)

EP 2 528 751 A1

(12)

(43) Date of publication: 05.12.2012 Bulletin 2012/49 (21) Application number: 11703962.8 (22) Date of filing: 26.01.2011

(51) International Patent Classification (IPC):  B43L 1/00(2006.01) (86) International application number: PCT/US2011/022618 (87) International publication number: WO 2011/094342 (04.08.2011 Gazette 2011/31)

(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 (30) Priority: 26.01.2010 US 298433 P (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)

(72) Inventors: GUSTAFSON, Frederick J. Saint Paul, Minnesota 55133-3427 (US) JING, Naiyong Saint Paul, Minnesota 55133-3427 (US) RIDDLE, Justin A. Saint Paul, Minnesota 55133-3427 (US) POKORNY, Richard J. Saint Paul, Minnesota 55133-3427 (US) LIU, Lan H. Saint Paul, Minnesota 55133-3427 (US) RAO, Prabhakara S. Saint Paul, Minnesota 55133-3427 (US) YANG, Yu Saint Paul, Minnesota 55133-342 (US) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)