Fire-screening panel
AssigneeBFG Glassgroup
InventorsWalther E. Hentzelt, Hans-Henning Nolte, Wolf von Reis
Life of this patent
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Abstract
A fire-screening panel is provided that maintains its effectiveness in preventing fire propagation even after aging of the panel. The panel comprises a first structural ply formed from a vitreous sheet, and a second structural ply, with a layer of intumescent material disposed therebetween. Other plies may also be provided, and the plies are clamped together in face-to-face relationship, and/or bonded together. At least one ply of the panel has an infra-red reflecting coating disposed thereon, remote from the intumescent material, which coating provides for the retained effectiveness of the fire-propagating properties of the panel despite aging thereof.
Claims23
A fire-screening glazing panel comprising
- a first structural ply formed by a vitreous sheet,
- a second structural ply formed by a vitreous or plastic sheet,
- a layer of intumescent material between said first and second structural plies, said material being convertible to form a thermally insulating barrier of porous or cellular structure when said panel is subjected to sufficient heat, such as when said panel is subjected to a fire,
- an infra-red reflecting coating disposed on a ply of said panel, said coating being isolated from said intumescent material between said first and second plies and said coating reducing the effects of aging upon said panel if exposed to a heat source, and
- means for holding said plies together to form a panel.
Dependencies are inferred from the claim text.