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US 2024/0308185 A1Published application
Fire-resistant glazing
AssigneePilkington Group Limited
InventorsAndreas POERSCH, Guido SIEBERT
Life of this patent
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Abstract
The invention provides a fire-resistant glazing that is less susceptible to failure, a method of manufacturing a fire-resistant glazing, and the use of a fire-resistant glazing, the fire-resistant glazing including a glazing edge wherein at least one area of the glazing edge comprises a weakened primary sealant portion and/or a weakened secondary sealant portion.
Claims21
-25. (canceled)
A fire-resistant glazing comprising:
- a first sheet of glazing material comprising a first major face, a second major face and at least one edge face;
- a second sheet of glazing material comprising a first major face, a second major face and at least one edge face, wherein the first sheet of glazing material and the second sheet of glazing material are arranged in a spaced-apart face-to-face arrangement with the first major faces of the first and second sheet of glazing material facing each other to form a cavity, and wherein the edge faces of the first and second sheets of glazing material are substantially aligned to form a glazing edge;
- a primary sealant located between the first sheet of glazing material and the second sheet of glazing material proximate to the glazing edge;
- a secondary sealant located between the first sheet of glazing material and the second sheet of glazing material and at least partially between the primary sealant and the glazing edge;
- and
- an intumescent layer located in the cavity between the first sheet of glazing material and the second sheet of glazing material;
- and wherein
- at least one area of the glazing edge comprises a weakened primary sealant portion and/or a weakened secondary sealant portion.
5 more elements
A method of manufacturing a fire-resistant glazing comprising the steps of:
- (i) providing a first sheet of glazing material comprising a first major face, a second major face and at least one edge face;
- (ii) arranging a primary sealant upon the first major face of the first sheet of glazing material proximate to the at least one edge face of the first sheet of glazing material;
- (ii) providing a second sheet of glazing material comprising a first major face, a second major face and at least one edge face;
- (iii) forming an assembly by arranging the first and second sheets of glazing material in a spaced-apart face-to-face arrangement with the first major faces of the first and second sheet of glazing material facing each other to form a cavity and wherein the edge faces of the first and second sheets of glazing material are substantially aligned to form a glazing edge;
- and
- (iv) providing an intumescent layer precursor solution in the cavity between the first and second sheets of glazing material;
- (v) applying a secondary sealant between the first sheet of glazing material and the second sheet of glazing material and at least partially between the primary sealant and the glazing edge;
- and
- (vi) weakening a portion of the primary sealant and/or a portion of the secondary sealant in at least one area.
6 more elements
Dependencies are inferred from the claim text.