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यार्न ट्विस्ट टेस्ट
Yarn twist test:
YYarn twist (Degree of twist):
T The yarn twist is a very important parameter. The number of turns of twist required to hold the fibres and yarns together is called the degree of yarn twist. it is measured in turns per inch in the yarn.
The amount of twist or degree of twist seriously affects the performance of yarn. If the yarn has less twist than standard then fibre slippage may occur. The yarn has a low twist possess low strength. There may be a chance of pilling formation due to low twists. It will give a soft feel and touch. If the yarn has more twists than standard. The yarn will show good strength but it will give a rough feel and touch. There may be a chance of snarling too.
the types of twists used in the yarn are given below:
S-twist:
The clockwise twist of yarn is called s-twist. The inclination of fibres in yarn looks similar to the middle part of the English letter “S”.
Z-twist:
The anticlockwise twist of yarn is called z-twist. The inclination of fibres in the yarn looks similar to the middle part of the English letter Z.
The amount of twist or degree of twist seriously affects the performance of yarn. If the yarn has less twist than standard then fibre slippage may occur. The yarn has a low twist possess low strength. There may be a chance of pilling formation due to low twists. It will give a soft feel and touch. If the yarn has more twists than standard. The yarn will show good strength but it will give a rough feel and touch. There may be a chance of snarling too.
the types of twists used in the yarn are given below:
S-twist:
The clockwise twist of yarn is called s-twist. The inclination of fibres in yarn looks similar to the middle part of the English letter “S”.
Z-twist:
The anticlockwise twist of yarn is called z-twist. The inclination of fibres in the yarn looks similar to the middle part of the English letter Z.
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