(19)

(11)

EP 2 089 293 A1

(12)

(43) Date of publication: 19.08.2009 Bulletin 2009/34 (21) Application number: 07848385.6 (22) Date of filing: 20.11.2007

(51) International Patent Classification (IPC):  B65D 81/07(2006.01) (86) International application number: PCT/GB2007/004412 (87) International publication number: WO 2008/062166 (29.05.2008 Gazette 2008/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR (30) Priority: 21.11.2006 GB 0623189 (71) Applicant: University of Teesside Middlesborough Tees Valley TS1 3BA (GB)	(72) Inventor: GAR PO CHEUG, Li Paul Hartlepool TS26 8QS (GB) (74) Representative: Archer, Graham John  Urquhart-Dykes & Lord LLP Cale Cross House Pilgrim Street Newcastle upon Tyne NE1 6SU Newcastle upon Tyne NE1 6SU (GB)