Definition of Sizing ? Objects of Sizing ?

 

Definition :

The process of applying a protective adhesive coating upon the yarn surface is called sizing. This is the most important operation to attain maximum weaving efficiency specially for blended and filament yarns.

Objects of Sizing:

·        To improve the weave ability of warpyarn.

·        To increase the tensile or breaking strength for celluloseyarn.

·        To maintain good qualityfabric.

·        To reduce hairiness, weakness of textilematerials.

·        To remove electrolytic formation for synthetic or blendedyarn.

·        To increaseelasticity.

Changes in Yarn due to Sizing:

·        Breaking strength:Increase

·        Abrasion Resistance:Increase

·        Stiffness:Increase

·        Elasticity:Increase

·        Frictional Resistance:Increase

·        Yarn Diameter:Increase

·        Extension:Decrease

·        Electrostatic Charger:Decrease

·        Hairiness:Decrease