Properties of Size Ingredients
- Ease of preparation
- Uniform viscosity
- Absence of prolonged congealing and kenning at application temperature
- pH control
- absence of foaming properties
- absence of prolonged tackiness
- compatibility with other components of the size
- stability towards decomposition
- ease of desizing
Size Ingredients and their functions
Adhesive: example: maize, wheat, corn, potato, ferina, sago, PVC, PVA, CMC
Function: it increases yarn strength and abrasion resistance
Lubricant: example: mineral oil, linseed oil, tallow, Japan was, cotton oil
Function: increases yarn smoothness and elasticity
Antiseptic agent: example: ZnCl2 , Phenol, carboxylic acid, synthetic acid
Function: it helps to store the yarn without being damaged and it also gives protection from bacteria or fungus.
Deliquescent agent: example: MgCl2, glycerin
Function: it prevents brittleness of size and helps to keep the standard moisture regain by not allowing water to enter or exit the fibre.
Weighting agent: example: china clay, French chalk
Function: it increases the weight of the yarn
Wetting agent: example: MgCl2
Function: helps to wet the yarn instantaneously
Tinting agent: example: Blue
Function: it helps o increase the brightness of yarn
Antifoaming agent: example: Benzene, Pyridine
Function: it prevents the formation of foam
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