C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
117/32, 154/42,
C03B 27/06 (2006.01) B32B 17/06 (2006.01) B32B 17/10 (2006.01) E06B 5/16 (2006.01)
Patent
CA 1127395
ABSTRACT A method of manufacturing a fire-screening glazing panel comprising at least one layer of intumescent material sandwiched between two structural plies of the panel, includes the steps of forming the layer and securing the plies together. In order to avoid or reduce problems associated with drying the intumescent layer, an assembly is made in which the structural plies sandwich a layer of intumescent material formed from at least one material of which at least the greater part by volume is in granular form. In a second aspect, in order to facilitate degassing of the intumescent layer, such layer contains intumes- cent material of which at least part is in the form of grains, and the intumescent material is subjected to suction at the edges of the assembly in a degassing step and the assembly is subjected to heat and/or pressure conditions to cause the grains in the layer to become assimilated into an intumescent body which bonds the structural plies together. The invention includes an intermediate product for forming a multi-ply fire-screening glazing panel, comprising a structural ply of glazing material bearing an adherent layer of which at least the greater part by volume consists of grains of intumescent material.
328712
Bfg Glassgroup
Swabey Ogilvy Renault
LandOfFree
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