Mixing in the Spinning Mill

Mixing is the first and important process in the spinning process. Mixing is a process by which different grade of the same fiber is kept together.

Types of Mixing

• Volume mixing.
• Bin mixing.
• Card mixing.
• Weight mixing.
• Automatic mixing.
• Hand stock mixing.
• Lap mixing.
• Sliver mixing.
• Mixing by hopper.

Mixing in the Spinning Mill

Mixing in a Spinning Mill

Factors to be Considered Before Doing Mixing

Length of cotton

The length of the fibers should be equal otherwise various types of problems will create. Fibers having different length causes the problem in drafting zone &also in simplex or ring frame.

Micronaire of cotton

The second considerable factor for mixing is the micronaire value of fiber, the higher, the micronaire value, the fibers are regarded coarser.

Color of cotton

Color is also a very important factor in mixing. In the case of cotton, it is measured by the brightness of cotton and the presence of yellow color in cotton.

Micronaire CV % of mixing bales

The micronaire CV % of mixing bales should be 5%.

Micronaire deviation

The micronaire deviation of cotton fibers should be (+-0.1) or (+-0.05). Otherwise mixing quality cannot be classified as good quality.

Length deviation

Length deviation should not exceed 10% deviation from mixing to mixing for the same lot.

Color deviation

in mixing, two lot of adjacent colors can be mixed, such as white and light spotted or light spotted, and can be mixed. But white and spotted cannot be mixed.

Lay down

Every cross-section of the laydown plant should be the same. This means the average micronaire value should be controlled in every cross-section.

Written by

Engineer Sheikh Nurja

B.Sc Engineer of Textile