Glossary

Yarn Size:

Denier and Decitex are the most commonly used measures of yarn size in the continuous filament.

Denier:

This is numerically equal to weight in grams of 9,000 meters of the material. Denier is a direct numbering system in which lower numbers represent the finer yarn sizes and the higher numbers the coarser sizes.

Decitex:

The weight in grams of 10,000 meters of fiber. Decitex is ten times tex

Cotton Count:

The yarn numbering system based on length and weight originally used for cotton yarns and now employed for most staple yarns spun on the cotton, or short-staple system. Under this system, the higher the number, the finer the yarn.

Twist:

The number of turns about its axis per unit of length of a yarn or other textile strand. Twist is usually expressed as turns per inch (tpi) or turns per meter (tpm).

Elongation:

The deformation in the direction of a load caused by tensile force. Elongation is measured in units of length (e.g., millimetres, inches) or calculated as a percentage of the original specified load or at the breaking load

Twisting:

The process of combining parallel singles yarns (spun or filament) into piled yarns or cords. Cables are made by twisting plied yarns or cords. Twisting is also employed to increase strength, smoothness, and uniformity. The process of adding twist to a filament yarn to hold the filaments together for ease in subsequent textile processing, etc.

Hot-Air Shrinkage:

The reduction in the dimensions of a yarn induced by exposure to dry heat. Specifically, a fundamental property of fibers.

DENIER/DECITEX CONVERSION CHART

Denier

Decitex

840

940

1000

1100

1100

1220

1500

1670

1650

1840

1680

1880

2000

2200

2200

2440

3000

3300

3300

3680











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