Study on combing machine.

Contents:-

1. Definition of combing.
2. Types of combing machine.
3. Noil of combing and hook fiber.
4. Passage diagram of combing process.
5. Contribution of combing to yarn quality.

Definition of combing:

Combing:- Combing is a process in cotton yarn manufacturing by removing short fiber neps and other remaining impurities with the help of long steel comb, bottom comb and griper.

Types of combing machine:

There are four type combing machine available-

1. Rectilinear comber.
2. Circular comber.
3. Rotary comber.
4. Hackling comber.

Noil of combing and hook fiber:

The short fiber extracted from the mini lap in combing process is called noil.

noil may be up to 25% and minimum 10%.

Hook fiber:

In cotton the fiber are entangled each other in hook form.But we have the state the fiber to form in linear assembled to make the yarn .In a cotton bulk the hook fiber are remain is three form:-

• More then 50% has trailing hook.
• About 15% have leading hook.
• About 15% have double hook.

Passage diagram of combing process:

Contribution of combing to yarn quality:

1. Combing process improve the strength of the yarn.
2. Combing process improve the uniformity of the yarn.
3. Combing operation remove the neps and remaining dust in the yarn.
4. Combed yarn has better twist distribution through out the yarn length.
5. Count variation is less in combed yarn.
6. Combed yarn improve the next process performance.
7. Combed yarn is more clean than  card yarn.