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INGREDIENTS <br /> MAJOR <br /> 1. POLYOL <br /> 2. TDI <br /> 3. WATER <br /> MINOR <br /> 1. TWO CATALYSTS <br /> 2. SILICONE SURFACTANT <br /> 3. FLUOROCARBON <br /> FIGURE t <br /> The seven ingredients are accurately and continuously metered <br /> into a mixing chamber. The still liquid reactants are then deposited <br /> on an inclined variable speed conveyor belt that continuously moves <br /> the liquid away. The foaming action starts very quickly and is com- <br /> plete in one or two minutes. The foam is produced in continuous <br /> "bread loaf" shapes commonly called buns or slabs. These slabs <br /> are cut into convenient lengths for fabrication. <br /> Simplified, two reactions take place to produce foam. (Refer to <br /> Figure No. 2) <br /> 2 <br />