(19)
(11) EP 1 185 485 A1

(12)

(43) Date of publication:
13.03.2002 Bulletin 2002/11

(21) Application number: 00932382.5

(22) Date of filing: 10.05.2000
(51) International Patent Classification (IPC)7C04B 28/14, B29C 47/14
(86) International application number:
PCT/US0013/145
(87) International publication number:
WO 0076/937 (21.12.2000 Gazette 2000/51)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 15.06.1999 US 139183 P
09.08.1999 US 147801 P

(71) Applicant: National Gypsum Properties LLC
Charlotte, NC 28211-3498 (US)

(72) Inventor:
  • BURKE, William, Roy
    Tonawanda, NY 14150 (US)

(74) Representative: Akers, Noel James et al
Howrey Simon Arnold & White,City Point,One Ropemaker Street
London EC2Y 9HS
London EC2Y 9HS (GB)

   


(54) GYPSUM WALLBOARD CORE, AND METHOD AND APPARATUS FOR MAKING THE SAME