D. Future Prospects The distinguished internal structures and structural mechanics of a cluster spun yarn have outcomes in superior properties of the yarn. This upgraded yarn properties and structure reduce the slippage tendency of staple fibres relative to the filament. Furthermore, higher frictional force and cohesion result in evenly and firmly blended polyester filaments and the cotton fibres in cluster-spun yarn. In addition, lower twist is necessary to produce a quality yarn. Overall, cluster-spun yarn has a huge potential to perform a significant role at the commercial application of composite yarn spinning in near future [1] .