(19)

(11)

EP 3 117 018 A1

(12)

(43) Date of publication: 18.01.2017 Bulletin 2017/03 (21) Application number: 15760680.7 (22) Date of filing: 11.03.2015

(51) International Patent Classification (IPC):  C22C 21/00(2006.01) (86) International application number: PCT/US2015/019867 (87) International publication number: WO 2015/138551 (17.09.2015 Gazette 2015/37)

(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 (30) Priority: 11.03.2014 US 201461951309 P 17.03.2014 US 201461954358 P (71) Applicant: Sapa Extrusions, Inc. Rosemont, IL 60018 (US)	(72) Inventor: LUKASAK, David, A. Orwigsburg, PA 17961 (US) (74) Representative: Zacco Sweden AB  P.O. Box 5581 114 85 Stockholm 114 85 Stockholm (SE)