Modern Fibre Technology — Winter 2023

Which are the manufactured fibres based on natural polymers and wholly synthetic polymers?

State the non-conventional applications of manufactured fibres.

Compare dry spinning and wet spinning.

Define texturing.

Write briefly about heat setting of thermoplastic fibres.

Explain the spin finish application techniques.

State the spin finish properties and discuss about the spin finish components.

How does the structure formation take place during solution spinning?

Write briefly about production of fibre forming polymers.

Discuss the process variables in melt spinning and solution spinning.

Write briefly about molecular orientation in fibres.

What is glass transition temperature?

Explain about the extruder in the melt spinning machine.

Write briefly about the cooling system at melt spinning.

State the applications and advantages of texturing.

Discuss the factors influencing properties of textured yarns.

State the features of high speed spinning.

Write briefly about draw texturing.

Explain the false twist texturing process.

What is stuffer box texturing?

Write briefly about knit-de-knit process.

Discuss the recent developments in the field of texturing.

What is gear crimping?

Write briefly about high performance fibres.

Explain the airjet texturing process.