Yarn designation| Factors required for yarn designation

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According to Textile Institute, “Yarn may be defined as a product of substantial length and relatively small cross-section consisting of fibre or filament with or without twist”.

To properly describe a specific yarn for communication purpose, a great deal of information is required. By using these information, the structure and properties of a yarn can be exposed entirely. The factors which are required to express yarn structure and properties wholly are called yarn designation.

The factors are

1. Yarn count/Linear density

The linear density of the yarn should be expressed. If the yarn is a ply or combination yarn, the linear density of the individual components and the resultant count should be stated.

2. Direction and amount of twist

The direction of twist and frequency (amount) should be identified in single yarn and in the individual component in case of ply yarn.

3. The fibre content

The fibre content may be identified generally and in case of blend, the proportion of the total weight of the yarn. The physical properties of the constituent fibres(length, crimp, fineness, etc.)

4. The yarn constructional features

The construction of the yarn is staple or continuous filament (single, ply or combine) should be indicated.

5. No. of filament.

6. No. of component in folding.

7. No. of component in cabling.

8. Strength and elongation.