Importance

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Abstract

A fire blanket comprises two superimposed fabric layers stitched or otherwise attached together along an array of intersecting lines to form a plurality of pockets or cells. Within the cells are disposed sealed bags made of plastics material containing a chemical compound which melts and reacts endothermically when heated, such as sodium hydrogen acetate. When the fire blanket is deployed over a fire, extinguishing action takes place by exclusion of oxygen. In addition, though, the plastics material of the bags melts or ruptures to release the melted chemical compound which permeates through the porosity of the fabric and onto the fire. The bags prevent seepage of the melted chemical compound into the fabric during conditions of high temperature transport or storage and any consequent stiffening of the fabric which would reduce its efficiency of deployment. Edge regions of the blanket may be devoid of the bags to enable the blanket to be more easily draped over the fire region.

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First Claim