(19)

(11)

EP 2 429 911 A1

(12)

(43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 10720076.8 (22) Date of filing: 12.05.2010

(51) International Patent Classification (IPC):  B65D 5/54(2006.01) (86) International application number: PCT/US2010/034470 (87) International publication number: WO 2010/132518 (18.11.2010 Gazette 2010/46)

(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 SE SI SK SM TR (30) Priority: 12.05.2009 US 177649 P (71) Applicant: MeadWestvaco Corporation Richmond, VA 23219-0501 (US)	(72) Inventor: WALLING, Bradford J. Raleigh, North Carolina 27604 (US) (74) Representative: Rule, John Eric et al Coulson and Associates 1st Floor Suite 5 Newbold Road Rugby Warwickshire CV21 2LQ Rugby Warwickshire CV21 2LQ (GB)