Soil release finish

1. Soil Release Finish
Praveen D Nagarajan

2. SOIL RELEASE FINISH :
Accumulation of soil and dust particles is known as
‘Soiling’.
To get rid of this soiling problem, the fabric cannot be made
totally soil repellent or soil resistant but a type of finish is
given to the fabric, so that during washing, the accumulated
soil on the fabric can easily be removed from the fabric. This
type of finish is known as
‘Soil Release Finish’.
Also, the released soil particles should not get redeposited on
the fabric during or after washing.

3. SOIL RELEASE FINISH :
PURPOSE:
This type of finish is mainly given to synthetic fibers.
Blouse pieces and some ladies wear are also soil
release finished because of their easy absorption of
soil.
The deposition of soil will reduce the appearance
and the real color of the fabric.
So, it is essential to carry out soil release finish.
This is a chemical and property giving finish.

4. SOIL RELEASE FINISH :
REQUIREMENTS:
It should not affect the fastness properties of dyed
material and some other physical properties such as strength,
feel, drape etc.,
It should be fast to light, wash and laundering.

5. SOIL RELEASE FINISH :
FACTORS GOVERNING SOILING:
• As the static charge increases, soiling increases.
• As the moisture regain increases, soiling decreases.
• As the temperature increases, soiling increase.
• As the size of the soil particles increases, soiling decreases.
• As the smoothness of surface increases, Soiling
decreases.
• As the denier of the fabric increases, soiling decreases.
• As the twist in the yarn increases, soiling increases.

6. SOIL RELEASE FINISH :
METHODS OF BRINGING SOIL RELEASE
PROPERTY:
Mercerization of cotton fabric, Using Film forming
compounds like CMC, PVA, starch.
Converting the fibre and making it hydrophilic.
Using metal oxides like silica, alumina, BaSO4, TiO2,.
Using Acrylic polymers with PE, PE glycols, PE
emulsion etc.,
Using Silicone emulsions, these are widely used
today.

7. SOIL RELEASE FINISH :
PROCESS FOR PET FIBRE:
FIRST METHOD:
Take polyester and pad with a solution
containing Polyethylene glycol and Sodium
hydroxide.
Pad – Dry method.

8. SOIL RELEASE FINISH :
SECOND METHOD
Take 1-3% concentration of Cirrasol PT.
Pad – Dry – Cure.

9. SOIL RELEASE FINISH :
THIRD METHOD:
Pad the polyester yarn with 10% of NaOH at
60 C for 10 minutes.
Pad – Dry.

10. SOIL RELEASE FINISH :
FOURTH METHOD:
Pad the polyester with H3PO4
( Phosphoric acid )
Pad – Dry.

11. SOIL RELEASE FINISH :
FRO POLYESTER / WOOLLEN BLENDS:
Soil Release Agents :
Migafor 5763 (CGY) or Nonax (Bohme)
Recipe:
• SRA - 50 PARTS
• MgCl2, 6H2O - 5 parts
• Fluorescent brightener - 10 – 40 parts
Pad – Dry – Cure.
Padding is done at an expression of 60%, followed by drying at a
temperature of 70 – 90 C and then curing at 180 – 210 C for 20 seconds.

12. SOIL RELEASE FINISH :
FOR NYLON FIBRES:
Methoxy Methyl nylon - 0.5%
Catalyst - 3%
Pad – Dry – Cure.