Global Patent Index - EP 1102904 A1

EP 1102904 A1 2001-05-30 - BUILDING BOARD AND ITS PRODUCTION

Title (en)

BUILDING BOARD AND ITS PRODUCTION

Title (de)

BAUSTOFFPLATTE UND IHRE HERSTELLUNG

Title (fr)

FABRICATION DE PANNEAU DE CONSTRUCTION

Publication

EP 1102904 A1 (EN)

Application

EP 99936795 A

Priority

  • GB 9902472 W
  • GB 9816427 A

Abstract (en)

[origin: WO0006849A1] A building board comprising cementitious fibre board has first and second surface layers (20, 23) of fibres admixed with cementitious materials; and a core layer (21) of fibres admixed with cementitious material but of different composition from either of the surface layers and disposed between the surface layers and bonded thereto by interpenetrating crystal growth; and at least one layer of fibrous mesh (22) interposed between the core layer and at least one of the surface layers and bonded to each of the adjacent layers by the interpenetrating crystal growth. The board may be produced by successively spreading layers of surface and core mixes to form a fibrous cementitious assembly, with interposition of at least one layer of fibrous mesh between at least one pair of adjacent layers of the mixes; compressing the assembly to a predetermined thickness; and maintaining the pressure until hydration of the cementitious material in the assembly is substantially complete.

IPC 1-7 (main, further and additional classification)

E04C 2/04; B28B 19/00; C04B 14/02; C04B 28/14

IPC 8 full level (invention and additional information)

B28B 1/52 (2006.01); C04B 28/14 (2006.01); E04C 2/04 (2006.01)

CPC (invention and additional information)

C04B 28/14 (2013.01); B28B 1/522 (2013.01); B28B 1/526 (2013.01); E04C 2/049 (2013.01); C04B 2111/00413 (2013.01); C04B 2111/00905 (2013.01); Y02W 30/97 (2015.05)

Combination set (CPC)

C04B 28/14 + C04B 18/241 + C04B 20/002 + C04B 32/02

Citation (search report)

See references of WO 0006849A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0006849 A1 20000210; EP 1102904 A1 20010530; GB 9816427 D0 19980923; PL 345668 A1 20020102

INPADOC legal status


2003-02-05 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20020802

2002-05-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020322

2001-05-30 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010213

2001-05-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI