Sizing is a coating (starch, PVA, or other agents) applied to warp yarns before weaving, providing strength and smoothness for the loom.
Why It's Used
Sizing helps warp yarns:
- Withstand loom tension
- Resist abrasion during weaving
- Reduce breakage
- Weave more smoothly
Without sizing, weak yarns would break during weaving.
The Problem for Towels
Sizing residue:
- Coats fibres
- Reduces absorbency
- Makes fabric stiff
- Must be removed
Removal
Sizing is removed during:
- Scouring: Industrial finishing
- First washes: Home laundering
New towels that don't absorb often still have sizing residue.
Desizing
Industrial desizing uses:
- Enzymes (for starch-based sizing)
- Hot water
- Detergents
Proper desizing is part of quality finishing.
Home Solution
If new towels don't absorb:
- Wash 2-3 times before use
- Hot water helps dissolve sizing
- Vinegar aids removal
- Skip fabric softener
See: Why Don't New Towels Absorb?
Related Terms
- Scouring - Removes sizing
- Finishing - Processing stage
- Absorbency - Affected by sizing