Ramakant Dubey offers a new solution to the problems faced in removing impurities in fibres and their entangling.

After the cotton fruit is plucked from plants, the fibres and the seeds undergo the ginning process. In the ginning machines, the main focus is to separate cotton fibres from seeds. But somehow, a few seeds get crushed and so the cotton along with seed coats and trash is packed in bale form and supplied to the spinning mills.

In cotton spinning, the first action is managed and controlled by the sequence of machinery called the blow room, whose main objective is to separate good fibres from impurities like dust, leaves, trash, seed coats and lint. The waste extracted is known as blow room droppings. For spinning good quality yarn, fibres should be free from these impurities. In general, the amount of waste extraction is decided by the trash in cotton mixing.


Beaters and air flow are the main components in beating and opening of fibres along with transportation of fibres and removal of impurities. During beating, some of the fibres get damaged or broken, and during transportation through air flow some long, short, damaged or immature fibres get converted into a ball form called neps, formed due to entanglement that may also carry tiny seed coats with them.

So fibres damage and neps are the by-product of the blow room process and to minimise these issues, there is a continuous development taking place in the machine design and in machinery components.

Concept of Pull room effect

If lumps of fibres are opened and cleaned without any beating and air transportation, that would result in reduced fibre damage and reduced generation of neps. This will further enhance yarn quality with lower process flow.