(19)

(11)

EP 2 646 342 A1

(12)

(43) Date of publication: 09.10.2013 Bulletin 2013/41 (21) Application number: 11779530.2 (22) Date of filing: 27.10.2011

(51) International Patent Classification (IPC):  B65D 77/20(2006.01) (86) International application number: PCT/US2011/057964 (87) International publication number: WO 2012/074631 (07.06.2012 Gazette 2012/23)

(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: 01.12.2010 US 418568 P (71) Applicant: MeadWestvaco Corporation Richmond, VA 23219-0501 (US)	(72) Inventor: THOMAS, Laurel Porland, Oregon 97229 (US) (74) Representative: Coulson, Elizabeth Eve et al Coulson & Associates 1st Floor Suite 5 Newbold Road Rugby CV21 2LQ Rugby CV21 2LQ (GB)