GATE (TF) Textile 2021 Question Paper Solution | GATE/2021/TF/06

Question 06 (Textile Technology & Fibre Science)
Q.6The yarn manufacturing technology that uses perforated drums for twisting is
(A)Ring spinning
(B)Rotor spinning
(C)Friction spinning
(D)Air-jet spinning
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It is friction spinning, formation of a new strand is carried out by suction to bring the individual in to engagement with the rotating open end of the yarn e.g. by perforated drums. In friction spinning the yarn is rotation is done by the rotating drum which is due to the friction between the rotating drum surface.

Frequently Asked Questions | FAQs

What is ring spinning ?

Ring spinning is a method of spinning fibers into yarn using a spinning wheel. In this process, a roving or sliver of fibers is fed through a series of rollers and twisted by a spindle with a ring attached to it. As the spindle rotates, the ring pulls the fibers through the rollers and twists them together to form a continuous yarn. The yarn is then wound onto a bobbin or package for further processing. Ring spinning is a widely used method for spinning cotton and other natural fibers into yarn.

What is rotor spinning ?

Rotor spinning is a method of creating yarn from fibers. In this process, the fibers are opened, cleaned, and carded to create a web of loose fibers. The web is then fed into a spinning rotor, which rotates at high speeds to twist the fibers into yarn. As the yarn is spun, it is wound onto a bobbin. Rotor spinning is a high-speed process that is often used to produce coarser yarns, such as those used in denim fabrics.

What is friction spinning ?

Friction spinning is a type of open-end spinning process that is used to produce yarn from short staple fibers. It is a relatively new spinning technology that was developed in the late 20th century.
In the friction spinning process, a high-speed rotor is used to separate the individual fibers from the input fiber mass. The rotor has a rough surface, which creates a high degree of turbulence in the fiber stream as it passes through the rotor. The frictional forces generated by the rough surface of the rotor cause the fibers to entangle and form a yarn.
The resulting yarn produced by friction spinning is typically coarser and weaker than yarn produced by other spinning methods, but it has unique properties that make it suitable for certain applications, such as for use in non-woven fabrics or technical textiles.

What is air jet spinning ?

Air jet spinning is a textile spinning technology that uses a high-pressure jet of air to spin fibers into yarn. The fibers are fed into the spinning machine and then drawn out through a nozzle, where they are spun and twisted by the high-velocity air. The yarn produced by air jet spinning is generally coarser than that produced by other spinning methods, but it is also stronger and more durable. Air jet spinning is used to produce a wide range of yarns, including cotton, polyester, and blends of different fibers. It is a high-speed and efficient method of spinning that is widely used in the textile industry.

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