O fio extravagante refere-se ao fio com efeito especial de estrutura e aparência produzido pelo processamento de fibras ou fios com matérias-primas especiais, equipamentos especiais ou tecnologia especial no processo de fiação e fabricação de fios.

Fancy yarns is a kind of yarn with decorative function in yarn products. 

Almost all natural fibers and common chemical fibers can be used as raw materials for fancy yarns. Fancy yarns can be made of silk, pressed silk, silk, rayon, cotton, linen, synthetic, gold and silver, blended yarn and cotton. All kinds of fibers can be used alone or mixed with each other to make up for each other's weaknesses and give full play to their inherent characteristics.

Classification of fancy yarns

Fancy yarns can be roughly divided into the following categories according to their processing methods: first, fancy yarns processed by ordinary spinning systems, such as chain yarns, gold and silver yarns, and filament-clamping yarns; second, fancy yarns processed by dyeing methods, such as mixed-color yarns, printing yarns, rainbow yarns; third, fancy yarns processed by fancy twisting machines, in which core yarns and ornaments are used. The difference and change of feeding speed can be divided into overfeeding type such as helix, braid, loop type and control type such as belly line and knot line, etc. Fourth, special fancy thread such as chenille line, core-wrapped line, wool-pulling line, flocking line, etc.

Fancy yarns have a fancy appearance for decoration. There are many kinds of fancy yarns and various production methods. The structure of fancy yarn is composed of core yarn, decorative yarn and fixed yarn. Core yarn bears strength and is the main yarn; decorative yarn is wrapped in twist to form effect on core yarn; fixed yarn is wrapped in opposite twist direction around decorative yarn to fix pattern, but there are also situations without fixing yarn. Following are the names and composition features of several common fancy yarns.

1. Knotted yarn is twisted and wound repeatedly in the same place.

2. Helix is made of two yarns of different fineness, twist and type.

3. The thick and soft fibers of slub yarn are attached to the core yarn and wrapped with fixed yarn.

4. The loop thread forms a closed loop and is wrapped with fixed yarn.

5. The coiled yarn is spirally wound on the core, but throws out the coiled yarn at intervals.

6. Chenille yarn is transversely trimmed with core yarn. The end of the ornamental yarn is loose and fluffy.

7. Diamond wire is wrapped around metal core wire (made of aluminium foil or sprayed metal material coated with transparent protective film) in another color. Fine decorative thread and fixed thread have diamond pattern effect.

Application of fancy yarns

Fancy yarns greatly protect people's travel and health.

At present, the best raw material for fancy yarn is 100% imported Australian wool, namely superfine Merino wool. It belongs to imported raw materials, and its origins are Australia, New Zealand, Uruguay and so on, among which New Zealand and Uruguay are the best, followed by New Zealand.

Imported Australian wool fancy yarn can be used for knitting sweaters, sweaters, scarves, hats, gloves and so on. It has a wide range of uses and protects the skin. It is really a fancy product.