EP 2235281 A2 20101006 - CEMENTITIOUS BOARDS WITH REINFORCED EDGES THAT RESIST IMPACT DAMAGE
Title (en)
CEMENTITIOUS BOARDS WITH REINFORCED EDGES THAT RESIST IMPACT DAMAGE
Title (de)
AUFPRALLRESISTENTE ZEMENTPLATTEN MIT VERSTÄRKTEN KANTEN
Title (fr)
PANNEAUX CIMENTAIRES À BORDS RENFORCÉS QUI RÉSISTENT AUX DOMMAGES PROVOQUÉS PAR DES IMPACTS
Publication
Application
Priority
- US 2008087478 W 20081218
- US 1734307 P 20071228
Abstract (en)
[origin: WO2009085981A2] A cementitious board reinforced on its edges by a coating of an elastic composition that provides improved nail pull strength to the board. In a preferred embodiment, the coating provides additional protection of the edges of the board from impact damage and cracking or 'spalling' of the board during handling and installation e.g. nailing, particularly when the board is nailed to a structure near the edges of the cementitious board. The cementitious board typically include gypsum fiberboard, paper covered gypsum wallboard and cement board having a core layer of a lightweight cement composition. On the edges of the board, the coating is applied to cover the portion of the board from the edge to a distance of about 0.635 cm. to 5.08 cm. (one fourth inch to two inch) typically 0.635 cm. to 2.54 cm. (one fourth inch to one inch) from each of the edges on both the top and bottom outer surface layers of the cementitious board to form rounded edges.
IPC 8 full level
CPC (source: EP)
E04C 2/043 (2013.01)
Citation (search report)
See references of WO 2009085981A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009085981 A2 20090709; WO 2009085981 A3 20090827; CA 2710834 A1 20090709; CL 2008003916 A1 20090925; EP 2235281 A2 20101006; JP 2011509194 A 20110324
DOCDB simple family (application)
US 2008087478 W 20081218; CA 2710834 A 20081218; CL 2008003916 A 20081226; EP 08869157 A 20081218; JP 2010540802 A 20081218