What are the types of spandex coated yarn? What are the main processes in the production of spandex coated yarn?

1、 What are the types of spandex coated yarn

Spandex coated yarn is an elastic yarn formed by wrapping stretched spandex fibers in a spiral shape with long or short fiber yarns as the core.

Category:

1. According to the number of coating layers, spandex coated yarn can be divided into two types: single coating and double coating. The difference lies in the number of layers and wrapping degree of the outer covering silk (yarn).

(1) Single wrapping yarn is a layer of outer wrapping yarn (yarn) wrapped around the core spandex, with fewer turns, and the fabric will show obvious core exposure.

(2) Double wrapped yarn is a type of spandex core yarn that is wrapped with two layers of long filaments or yarns, usually in opposite directions. The core silk spandex is well wrapped, and the fabric will not expose the core.

2. According to different equipment, it can be divided into two types: air wrapped yarn and mechanical wrapped yarn.

(1) Air wrapped yarn (referred to as air wrapped yarn): It is a yarn formed by simultaneously stretching the outer fiber filament and spandex filament, passing through a certain type of nozzle, and forming a regular network of points through highly compressed air regular spraying pressure.

(2) Mechanical wrapping yarn (referred to as machine wrapping): It is a type of yarn that continuously rotates and wraps the outer fiber filament onto a uniformly stretched core fiber spandex. It is twisted and has a certain degree of twist.