2020dtex/7f nylon and spandex air wrapping yarn with fine denier smaller than that of silk

The embodiment of the utility model provides a 2020dtex/7f nylon and spandex air wrapping yarn with a fine denier smaller than that of silk. The air wrapping yarn comprises seven nylon monofilaments with the total denier of 20 dtex and a spandex monofilament with the denier of 20 dtex, a plurality of fluffy sections and knotted sections uniformly distributed at equal intervals and used for spraying compressed air through networked spray nozzles to form spandex wrapped with nylon are arranged, the nylon monofilaments are uniformly distributed in a double-layer concentric circle mode and include three nylon monofilaments with double-C-shaped sections and uniformly distributed on the inner layer and four nylon monofilaments with circular sections and uniformly distributed on the outer layer, the nylon monofilaments with the double-C-shaped sections and the nylon monofilaments with the circular sections are arranged in a spaced mode, and the knotted sections are 115-125 pieces per meter. According to the air wrapping yarn, one spandex monofilament with the denier of 20 dtex is wrapped with seven nylon monofilaments with the total denier of 20 dtex, the sections of the nylon monofilaments are circular and double-C-shaped, the denier of products is reduced, cohesion performance of the products is improved, and the number of broken filaments and the end breakage rate are reduced.