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1. Sizing

2. Introduction
• Warp yarns are used to supply on looms where warp
threads are subjected to repeatedly occurring
various stresses like cyclic strain, flexing, and
abrasion.
• These unavoidable stresses cause frequent warp
breaks which consequent in the form of loom
stoppages and finally, efficiency loss and fabric faults
come in account.
• To minimize these problems, warp yarns are needed
to be sized.

3. Objective
• The main objective of sizing is to form a uniform
coat over warp yarns and lay down the protruding
fibers on yarn body that protrude out of its surface.
• After sizing, the strength and abrasion resistance of
the yarn improves and hairiness decreases.
• The sizing material should be selected in such a way
that it could be easily removed during the process of
de-sizing.
• The size material should penetrate the body of yarn
to such an extent that the film gets a firm anchor.

4. Sizing machine
Creel zone
Size box zone
Drying zone
Headstock zone

5. Creel Zone
Over and under creel

6. Size materials
The principal components of a sizing recipe are
• Adhesive
• Lubricant
• Antimicrobial age