Question 07 (Textile Engineering & Fibre Science)
The spinning system that does not generate false twist during spinning is
| (A) | Ring spinning |
| (B) | DREF 3 |
| (C) | Rotor spinning |
| (D) | Air jet spinning |
Answer / Solution
[Show Answer]
Option A
Frequently Asked Questions | FAQs
What is the process of false twist?
The false twist process involves twisting a yarn in the opposite direction of its original twist. This is typically done by passing the yarn through a pair of rollers or discs that rotate at different speeds. The yarn is fed into the rollers with a slight tension, causing it to twist in one direction. As the yarn passes through the rollers, the tension is released, and the yarn untwists slightly before being twisted again in the opposite direction.
The result is a yarn with a false twist, which can cause a number of problems such as reduced strength and elongation, unevenness, and snarling. To correct for false twist, the yarn may need to be passed through a device known as a “twist setter” that will reset the yarn’s twist in the correct direction. Alternatively, the yarn can be passed through a heat-setting process that will help to stabilize its structure and reduce the occurrence of false twist.