The invention relates to the technical field of spandex
coating yarn, in particular to dacron-chinlon-spandex
coating yarn and a preparation process thereof. According to the preparation process, firstly, dacron
yarn POY and chinlon yarn POY are drawn out by corresponding yarn racks, and a false twisting
machine platform is adopted for finishing the following processes of (1) feeding a first roller of the false twisting
machine platform with the decron yarn POY and the chinlon yarn POY which are drawn out by the yarn racks, after the decron yarn POY and the chinlon yarn POY are wound and combined by the first roller, conducting heating by a deformation heating box, conducting cooling by a cooling plate, conducting twisting by a false twisting
machine, and obtaining decron-chinlon combined yarn; (2) feeding a second roller with spandex yarn and the decron-chinlon combined yarn obtained in the step (1), after the decron-chinlon combined yarn is combined with the spandex yarn by the second roller, putting the newly combined yarn above into an air interlacing jet, conducting air injection bonding through the air interlacing jet, and then feeding a winding device with the combined yarn for conducting winding formation
processing after the combined yarn is processed by a third roller. According to the preparation process, preparation of the dacron-chinlon-spandex
coating yarn can be completed by a one-
step method, and the obtained dacron-chinlon-spandex coating yarn is high in bonding degree and uneasy to detach and fracture, and after being dyed, the dacron-chinlon-spandex coating yarn can achieve an effect of presenting double colors in different shades.