Abstract: A continuous process for achieving specific levels of fire retardant properties for either natural fibers or synthetic fibers. Selected fibers are mixed and opened to be formed into a web that is continuously weighed and transported to a spray station to be sprayed by a selected fire retardant solution. The sprayed web is compressed between calendar rolls and transported to a dryer; the dried web is blended to form a selected fiber having a predetermined fire retardant characteristic to meet regulatory standards. An intermediate product results from the use of the process.