Claims
- 1. A duct board material, comprising:
a substantially rigid fiber glass board having an interior surface and an exterior surface; an exterior facing adhered to the exterior surface; and a bonded, non-woven mat facing adhered to the interior surface, the mat having a plurality of parallel or substantially parallel fibers oriented in a longitudinal direction of the duct board material.
- 2. The duct board material of claim 1, wherein the mat facing comprises a plurality of parallel or substantially parallel yarns.
- 3. The duct board material of claim 2, wherein the plurality of parallel or substantially parallel yarns are embedded in the non-woven mat facing.
- 4. The duct board material of claim 3, wherein the yarns are embedded in the mat facing without slack.
- 5. The duct board material of claim 1, wherein the mat facing has a plurality of fibers preferentially oriented in the longitudinal direction.
- 6. The duct board of claim 5, wherein the mat facing has a ratio of machine direction tensile strength to cross direction tensile strength of at least 2:1.
- 7. The duct board material of claim 1, wherein the exterior facing is a second bonded, non-woven mat facing having a plurality of parallel or substantially parallel fibers oriented in the longitudinal direction of the duct board material.
- 8. The duct board material of claim 1, wherein the exterior facing comprises a foil-scrim-kraft layer.
- 9. The duct board material of claim 1, wherein the non-woven mat facing includes glass filaments in a resinous binder.
- 10. The duct board material of claim 1, wherein:
the exterior facing comprises a foil-scrim-kraft layer, the non-woven mat facing includes glass filaments in a resinous binder, and the mat facing has a plurality of parallel or substantially parallel yarns embedded therein without slack.
- 11. A duct board material, comprising:
a rigid fiber glass board having an interior surface and an exterior surface; an exterior facing adhered to the exterior surface; and a bonded, non-woven mat facing adhered to the interior surface, the mat having a plurality of parallel fibers oriented in a longitudinal direction of the duct board material.
- 12. A duct board material, comprising:
a substantially rigid fiber glass board having an interior surface and an exterior surface; an exterior facing adhered to the exterior surface; and a plurality of parallel or substantially parallel fibers oriented in a longitudinal direction of the duct board material and adhered to the interior surface.
- 13. The duct board material of claim 12, wherein the parallel or substantially parallel fibers are adhered to the fiber glass board using an adhesive or resin.
- 14. The duct board material of claim 12, wherein the parallel or substantially parallel fibers are fiber glass yarns.
- 15. The duct board material of claim 12, wherein the exterior facing is a bonded, non-woven mat facing having a plurality of parallel or substantially parallel fibers oriented in the longitudinal direction of the duct board material.
- 16. The duct board material of claim 12, wherein the exterior facing comprises a foil-scrim-kraft layer.
- 17. A method for forming a duct board, comprising the steps of:
(a) forming a substantially rigid fiber glass board having an interior surface and an exterior surface; (b) adhering an exterior facing to the exterior surface; and (c) adhering a bonded, non-woven mat facing to the interior surface, the mat facing having a plurality of parallel or substantially parallel fibers oriented in a longitudinal direction of the duct board material.
- 18. The method of claim 17, wherein the mat facing comprises a plurality of parallel or substantially parallel yarns.
- 19. The method of claim 18, further comprising forming the non-woven mat facing with the plurality of parallel or substantially parallel yarns embedded therein.
- 20. The method of claim 19, wherein the step of forming the non-woven mat facing includes removing slack from the yarns.
- 21. The method of claim 18, wherein the step of forming the non-woven mat facing includes feeding the yarns from one of the group consisting of a warp beam and a creel.
- 22. The method of claim 17, wherein step (c) is performed before the duct board enters a curing oven.
- 23. The method of claim 17, wherein step (c) is performed after the duct board exits a curing oven.
- 24. The method of claim 17, wherein the mat facing has a plurality of fibers predominantly oriented in the longitudinal direction.
- 25. The method of claim 17, wherein the exterior facing is a second bonded, non-woven mat facing having a plurality of parallel or substantially parallel fibers oriented in the longitudinal direction of the board material.
- 26. A method for forming a duct board, comprising the steps of:
(a) forming a substantially rigid fiber glass board having an interior surface and an exterior surface; (b) adhering an exterior facing to the exterior surface; and (c) adhering a plurality of parallel or substantially parallel fibers to the interior surface, the plurality of parallel or substantially parallel fibers oriented in a longitudinal direction of the duct board material.
- 27. The method of claim 26, wherein the parallel or substantially parallel fibers are included in a plurality of parallel yarns.
- 28. The method of claim 26, wherein step (c) includes removing slack from the yarns.
- 29. The method of claim 26, wherein step (c) includes feeding the yarns from one of the group consisting of a warp beam and a creel.
- 30. The method of claim 26, wherein step (c) is performed before the duct board enters a curing oven.
- 31. The method of claim 26, wherein step (c) is performed after the duct board exits a curing oven.
Parent Case Info
[0001] This application is a continuation-in-part of U.S. application Ser. No. 10/141,595, filed May 8, 2002.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10141595 |
May 2002 |
US |
Child |
10757893 |
Jan 2004 |
US |