State the properties of manmade fibres that give them advantage over natural fibres.
[3 marks]What is the importance of the property orientation?
[4 marks]Explain the critical parameters in melt spinning process.
[7 marks]Define texturing.
[3 marks]State the applications of solution spun fibres.
[4 marks]Explain the drawing process of the fibres.
[7 marks]Write a short note on high performance fibres.
State the special features of high speed spinning.
[3 marks]Write briefly about the property crystallinity.
[4 marks]Explain the melt spinning process with a neat sketch of passage of material.
[7 marks]Write briefly about the extruder in melt spinning.
[3 marks]How is heatsetting of thermoplastic fibres carried out?
[4 marks]Explain the two important thermal transitions in a semicrystalline polymer.
[7 marks]Give the applications of textured yarns.
[3 marks]Which are the factors influencing false twist texturing.
[4 marks]Discuss the process variables in solution spinning.
[7 marks]State the properties of false twist textured yarns.
[3 marks]Write briefly about the feed material characteristics in airjet texturing.
[4 marks]Compare dry spinning and wet spinning.
[7 marks]What is stuffer box texturing?
[3 marks]Write briefly about the knife edge crimping.
[4 marks]Discuss the recent developments in texturing.
[7 marks]Which are the important process variables in airjet texturing?
[3 marks]Write briefly about draw texturing.
[4 marks]Discuss the knit-de-knit and gear crimping texturing process.
[7 marks]