Rotor open end spinning - Sliver Preparation & Trash Removal

•In early days of rotor-spinning ,yarn manufacturers were attracted by the potential of the process to reduce raw-material costs by utilizing low-grade cottons & waste .

• Today, although it is accepted that such raw material can be processed, it is also recognized that greater attention has to be paid to the resultant yarn quality & consequently, the cleanliness of the sliver feed.

• Therefore sliver preparation & trash removal processes become very important. We will study these processes in the following sequence :-.

•Effects of trash on rotor spinning.
Types of trash & dedusting at gin.
• Dedusting in the blowroom.
• Dedusting on the card.
• Dedusting at the drawframe.
• Dedusting at comber.
• Improved cleaning at the rotor unit.