Matte elastic fireproof thread and manufacturing process thereof

The invention relates to a manufacturing process of a matte elastic fireproof thread, which comprises the following steps: step 1, selecting a flame-retardant material aramid fiber mixed flame-retardant additive to tightly coat a layer of nylon monofilaments in a cross manner without stress, and then using different tensile forces according to the monofilaments with different diameters; five pulling force grades are equally divided according to the pulling force for five times of coating, and the direction needs to be changed for staggered coating and the pulling force grade needs to be upgraded at the next time every time the coating is carried out, so that the aramid fiber fireproof nylon monofilament coated yarn is formed; 2, uniformly compressing and folding a plurality of monofilaments, and twisting the monofilaments into a single-strand plied yarn; thirdly, the single-strand yarn continues to be wrapped again in the first step; 4, the single strand obtained in the step 3 is subjected to high-temperature