Fancy thread (yarn), or fancy thread, is a combination of twisting and has various special structural properties and appearances.
2. Classified by fiber composition
involves two concepts: one is the fibers that make up the yarn; the other is the distribution of multi-component fibers.
1. Component by fiber
(1) Pure spun yarn
Pure spun yarn is composed of the same fiber, such as pure cotton yarn, wool yarn, viscose yarn, acrylic yarn, polyester yarn, nylon yarn and so on.
(2) Blended (blended) yarn
Blended or twisted yarn is a yarn composed of two or more fibers, such as polyester/cotton blended yarn, wool/polyester blended yarn, wool/acrylic blended yarn, polyester/viscose/acrylic blended yarn , Silk/Cotton yarn, twisted yarn, etc. The short fiber yarn spun by mixing two or more short fibers is called blended yarn; and the yarn made by combining two or more filament yarns (such as twisting) is called blended yarn.
(3) Associated spinning yarn
The yarn spun from the soluble fiber (short fiber or filament) and the short fiber is called the co-spun yarn. Such as water-soluble vinylon with spinning. Accompanying spinning is a kind of blending in the spinning process, but in the end the component will exit or partly exit the yarn body.
2. According to the distribution of mixed fibers
(1) Evenly mixed yarn
Yarns, silks, threads composed of different fiber components, or fibers of different colors, or fibers of different properties uniformly mixed by spinning, spinning, or ply. The characteristic is that each component fiber is uniformly and continuously distributed in the yarn body.
(2) Varying mixed yarn
A yarn composed of different fiber components, or fibers of different colors, or fibers of different properties in the yarn body with a gradual or abrupt distribution. Such as gradient yarn, slub yarn, etc.
（3）Combined or composite yarn
Yarn, silk, thread composed of short fibers and short fibers, short fibers and filaments, filaments and filaments, fiber bundles and yarns, etc., combined or compounded together. There are many varieties of this kind of yarn, such as core-spun yarn, wrapping yarn, filament fancy yarn and so on.
