Patent ID: 7921800
Filing Date: 2011-04-12
Classification: B32B,C09K,Y10T

Abstract:
1. A system for coating a cementitious fire-resistant substance onto a substrate, the system comprising: a nip formed between two rollers; a veil supply that supplies to the nip a pliable carrier veil; a mixing station for mixing MgCl brine and water to form the cementitious fire-resistant substance; a material supply line for supplying said cementitious fire-resistant substance to the nip in slurry form, to form a reservoir of said cementitious fire-resistant substance defined by said nip of two rollers; adjusting means for setting a nip dimension between said two rollers such that the two rollers exert a pressure on the pliable carrier veil that provides an amount of the cementitious fire-resistant substance in and on said pliable carrier veil to form a veil layer; delivery means for delivering the veil layer to couple with a surface of the substrate, wherein the substrate and delivery means are supported for motion relative to each other; a heater for applying an initial amount of heat to the veil layer sufficient to accelerate curing in the cementitious fire-resistant substance; transport means for transporting the coupled veil layer and substrate out of the heater; and a control center for controlling a fire resistance of the substrate having the cementitious fire-resistant substance, wherein the control center controls an amount of water mixed with the MgCl brine at the mixing station, controls a rate of delivery of the cementitious fire-resistant substance from the material supply line, controls an amount of pressure exerted on the pliable carrier veil by the nip, controls a rate at which the veil layer is delivered from the nip, controls the initial amount of heat applied by the heater to the veil layer, or controls a transport rate at which the transport means transports the coupled veil layer and substrate.