Fireproof glasswork
AssigneeGlaverbel-Mecaniver
InventorsFrancis Jacquemin, Robert Terneu, Jean-Pierre Voiturier
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Abstract
The invention relates to a fire screening glazing panel and a method for forming the panel. The panel is composed of at least two structural plys, at least one of which is a vitreous sheet, and a layer therebetween composed at least in part of a heat convertible carrier forming material which material forms a solid porous or cellular thermally insulating body when subjected to sufficient heat, as during a fire. A protective stratum is applied to at least one of the vitreous sheet plys for inhibiting interaction between the barrier forming material and the ply, thereby maintaining the transparency of the ply if it is formed of transparent material, and maintaining its color.
Claims14
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 formed between said plies comprising a material which is convertible to form a thermally insulating barrier or porous or cellular structure when said panel is subjected to sufficient, heat, such as when said panel is subjected to a fire, said material being an hydrated salt selected from the group consisting of aluminates, plumbates, stannates, alums, borates, alkali metal silicates and phosphates, and protective stratum means located between said first structural ply and said layer of heat convertible barrier forming material for inhibiting interaction between said barrier forming heat convertible material and said structural ply, wherein said protective stratum means is selected from the group consisting of layers of polyvinylbutyal and polyurethane substantially water imprevious plastic sheets and coatings of anhydrous metal oxides and anhydrous aluminum phosphate.
Dependencies are inferred from the claim text.