Method for producing fire-resistant, thermally insulating board

Details Method for producing fire-resistant, thermally insulating board Method for producing fire-resistant, thermally insulating board

B - Operations, Transporting

32

B

154/90.3

B32B 5/00 (2006.01) B32B 7/00 (2006.01) B32B 15/08 (2006.01) E04B 1/94 (2006.01) E04C 2/284 (2006.01)

Patent

CA 1166943

ABSTRACT OF THE DISCLOSURE A method for producing a fire-resistant, thermally insulating board and the resulting board are disclosed. The method comprises applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the applied surface, laying the spread surface on (1) a facing material or sheet (D), (2) a facing material or sheet (D) coated in advance with liquid hydrated sodium silicate (B) or (3) a facing material or sheet having powdery hydrated sodium sili- cate (C) spread further over the coated surface of (2), subjecting the assembly to heating and pressing for gluing the assembly, and laminating the resulting fire-resistant board (E) with rigid isocyanurate foam (F). The fire-resistant, thermally insulating board exhibits reduced fusion and combustion of the rigid isocyanurate foam (F) even when exposed to flame and possesses superior mechanical properties.

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