| US 7,615,504 B2 | ||
| Cementitious boards | ||
| John Frederick Porter, St. Catharines (Canada); and Geraint Roberts, Youngstown, N.Y. (US) | ||
| Assigned to Saint-Gobain Technical Fabrics America, Inc., Northborough, Mass. (US) | ||
| Filed on Feb. 21, 2008, as Appl. No. 12/34,772. | ||
| Application 12/034772 is a division of application No. 10/615671, filed on Jul. 09, 2003, granted, now 7,354,876, filed on Apr. 08, 2008. | ||
| Prior Publication US 2008/0200086 A1, Aug. 21, 2008 | ||
| Int. Cl. B32B 17/04 (2006.01); B32B 17/06 (2006.01) | ||
| U.S. Cl. 442—180 [442/43; 442/58; 442/64; 442/65; 442/104; 156/148; 264/134; 264/136; 264/137] | 15 Claims |
| 1. A reinforced cementitious board comprising:
(a) a cementitious core; and
(b) a reinforcing fabric disposed on at least one face of said cementitious core while imbedded into a portion of the cementitious
core; said reinforcing fabric including:
(i) a plurality of warp yams having a first twist (turns/inch);
(ii) a plurality of weft yams having a second twist which is greater than said first twist; and
(c) a resinous coating applied to said reinforcing fabric in a coating weight distribution ratio of less than about 2.0:1
based upon the weight of the resinous coating on the weft yams, over the weight of the resin on the warp yams.
|