1. Submitted by :

2. The faults which are visible after dyeing are called Dyeing faults . These
faults descries the quality of the fabrics . So to overcome from this faults
we have to know the causes and the remedies of these dyeing faults .

3. Faults in Dyeing Sector
Faults in Dyeing Sector

5. Knit Dyeing
Knit Dyeing
Fault
Fault
Knit Dyeing Faults
11
22
33
44
55
66
77
88
99
10
10
11
11
1. Dyeing Hole
2. Running Shade
3. Dye Spot
4. Uneven shade
5.Batch To Batch shade
Variation
6.Roll to roll shade
Variation
7. Crease Mark
8.Softener mark
9.Soda Spot
10.Oil Spot
11.White Spot

6. 1
Causes:
22
33
44
55
1. Dye bath water hardness.
2. Deposition of ferrous or ferric ion on the fabric
surface
3. Defective plaiting device of the machine.
66
77
88
99
11
00
11
11

7. 11
2
33
44
55
66
Causes:
I.Change in pick-up percentage along the length of the
fabric .
II.Improper fabric Speed.
III.Machine over-loading.
IV.Running at lower nozzle pressure .
V.High bath draining temperature .
VI.Improper cycle time .
VII.Improper length of rope .
77
88
99
10
10
11
11

8. 11
22
3
44
Causes:
i.Operator negligence
ii.Dye bath hardness
iii.Improper Agitation of dyestuff
iv.Dye molecule deposition on the fabric
55
66
77
88
99
10
10
11
11

9. 11
22
33
4
55
Causes:
i)If uneven pretreatment is done, absorbency
and whiteness of fabric will be different at
different places and consequently uneven
dyeing will occurred.
ii) Very rapid addition of dyes and chemicals.
iii) Lack of controlling dyeing machine like- Machine speed.
- Temperature of the process.
- Dosing time.
- Circulation pump and reel speed.
- Plaiting device.
- M:L ratio.
- Improper washing after dyeing.
66
77
88
99
10
10
11
11

10. 11
22
33
44
5
66
77
Sources & Causes:
88
99
10
10
11
11
1.Fluctuation of Temperature.
2.Improper dosing time of dyes & chemicals.
3.Batch to batch weight variation of dyes and chemicals.
4.Dyes lot variation.
5.Improper reel speed, pump speed, liquor ratio.
6.Improper pretreatment.

11. 11
22
33
44
Sources & Causes:
I. Improper dyes solubility.
II. Hardness of water.
III. Faulty m/c speed, etc.
IV. Poor
V. migration property of dyes.
55
6
77
88
99
10
10
11
11

12. 11
22
33
44
55
66
7
88
Sources & Causes:
I. Poor opening of the fabric rope.
II. Shock cooling of synthetic material.
III. If pump pressure & reel speed is not equal.
IV. Faulty plaiting device.
V. For 100% cotton, if GSM>180, unbalanced structure,
presence of lycra, not properly heat set increase the
tendency to crease mark formation.
VI. Variation of heating & cooling rate.
VII. - More cycle time, more time fabric will be in folded
condition increase tendency
99
10
10
11
11

13. 11
22
33
44
55
66
Sources & Causes:
I. Improper mixing of the Softener.
II. Improper running time of the fabric during
application of softener.
III. Entanglement of the fabric during application of
softener.
77
8
99
10
10
11
11

14. 11
22
33
44
Sources & causes:
I.Soaping start before wash
II.CaCO3 or MgCO3 in soaping bath.
55
66
77
88
9
10
10
11
11

15. 11
22
33
44
55
66
77
88
Sources & Causes:
I.More oil & grease use the wheel, roller bearing into place.
II.To stay unclean the m/c.
III.Be decay the roller.
IV.Fabric waste.
99
10
11
11

16. 11
22
33
44
Sources & causes:
I.Hardness of the Dye house Water
II.Improper Mixing of Dyestuff
III.Temperature Up Down
IV.Sedimentation of Dyestuff
55
66
77
88
99
11
00
1
1

17. 1. Long mark
2. Loop mark
3. Brush problem
4. Dhappa spot
5. Uneven even hairiness
6. Yellow spot
7. Water spot
8. Iron spot
9. soda spot
10.Out color
11.Lycra out
12.Enzyme dust
13.Fly we
14.Patta fault

18. 












Ballooning shape.
Radish shade.
Squeezer mark.
Dia mark.
Dirty spot.
Compaction /Press mark.
Compacting hole.
Crease mark.
Calendaring crease.
Oil Spot.
Improper shrinkage.
Bowing
Crease Streak

19. HAIRINESS = Re Enzyme / light Enzyme Wash /normal wash on the dye bath
Oil SPOT= Use thinner and spot lifter for stripe or coloar
BOWING= Use Weft Stratiner divice (Mahalo/Bainco /paliva ) before Stanter .
SOFTNESS = Use good quality softner in every stage like Dyeing, stantoring , padder
SOIL SPOT= Re Wash in the Winch dyeing Machine
Dappa = Stripping of the fabric change padder pressure of Stanter
SIDE MARK (Calendar) = Re Calendar or cut the fault area

20. GSM HIGH = Send it to compactor run the machine With under feed the fabric
GSM LOW= Send it to compactor run the machine With overfeed the fabric
DYEING HOLE = Stripe carefully for light fabric and demeniralized the slub fabrics
COLOR SPOT = Stripping the fabric and re dyeing
CREA SEMARK = Calander or Compaction
UNEVEN SHADE = Stripping and re dyeing
RUNNING SHADE = Use yellow softner or Blue softner or redyeing if reject
DIA UP DOWN = Use compactor or Stanter