(19)

(11)

EP 1 646 469 A1

(12)

(43) Date of publication: 19.04.2006 Bulletin 2006/16 (21) Application number: 04757147.6 (22) Date of filing: 21.07.2004

(51) International Patent Classification (IPC):  B23B 29/06(1968.09) (86) International application number: PCT/US2004/023285 (87) International publication number: WO 2005/009658 (03.02.2005 Gazette 2005/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 23.07.2003 US 489433 P (71) Applicant: MeadWestvaco Corporation Stamford, CT 06905 (US)	(72) Inventors: MASON, Mark, Olin Covington, VA 24426 (US) CALVERT, Barry, Gene Covington, VA 24426 (US) (74) Representative: Parry, Simon James  Forrester & Boehmert, Pettenkoferstrasse 20-22 80336 München 80336 München (DE)