Different sections in yarn manufacturing

Yarn manufacturing is a process of producing yarn from fiber. This is considered as the first step of apparel manufacturing.

There are several sections in yarn manufacturing. They are-

1. Blow room.
2. Carding
3. Drawing
4. Roving
5. Ring
6. Finishing

The inputs and outputs of these sections are described below:

1. Blow room section:

Input: Raw cotton

Output: Lap

2. Carding section:

Input: Lap

Output: Card sliver

In case of producing jute yarn 2 step carding is done. They are-

• Breaker card:

Input: Softened jute

Output: Breaker card sliver

• Finisher card:

Input: Breaker card sliver

Output: Finisher card sliver

3. Drawing section:

Drawing operation is done in 2 stages. They are-

• 1^st drawing machine:

Input: Card sliver

Output: 1^st drawn sliver

• 2^nd drawing machine:

Input: 1^st drawn sliver

Output: 2^nd drawn sliver

Roving section:

Input: 2^nd drawn sliver

Output: Roving

Ring section:

Input: Roving

Output: Yarn (cop)

Finishing section:

Input: Yarn (cop)

Output: Yarn (cone)

Flow chart of carded yarn production:

Flow process of carded yarn production

Also read: 

Yarn count (direct and indirect) and yarn notation systems

Flow chart of combed yarn production: