Method for producing covering yarn

Abstract

The invention discloses a method for producing covering yarn. The method mainly takes spandex filaments as core yarns, two times of blend fiber covering are carried out on the surfaces of the core yarns, and the twisting direction of the blend fibers of the first covering is opposite to the twisting direction of the blend fibers of the second covering. The method for producing the covering yarn utilizes the blend fibers to cover the spandex filaments for two times, and the twisting directions of the two times of covering are opposite to each other, so that the phenomenon that the blend fibers slide on the surfaces of the spandex filament core yarns is reduced or eliminated, the phenomenon that the spandex filaments are exposed on the surface of a textile is reduced, and a good covering effect is obtained.

Description

technical field

[0001] The invention belongs to the technical field of textiles, and in particular relates to a method for preparing a core-spun yarn. Background technique

[0002] Core-spun yarn is generally a yarn made of synthetic fiber filaments with good strength and elasticity as the core yarn, and short fibers such as cotton, wool, and viscose fibers are twisted and spun together. The more common core-spun yarns include polyester-cotton core-spun yarn, which uses polyester filament as the core yarn and outsources cotton fibers; and spandex core-spun yarn, which uses spandex filament as the core yarn and outsources yarn made of other fibers. The disadvantage of these core-spun yarns is that the short fibers are covered only once outside the filament core yarn, and the short fibers in the yarn will slip on the filaments, causing the filaments to be exposed in some segments of the yarn, on the surface of the fabric. Defects occur and the coating effect is poor. Conten...