woven dyeing faults

Southeast University

Prepared By : Mazadul Hasan sheshirID: 201000040000813th Batch (session 2009-2013)Department : Wet Processing Technology Email: mazadulhasan@yahoo.comBlog : www. Textilelab.blogspot.com (visit)

Southeast University Department Of Textile Engineering

I/A 251,252 Tejgaon Dhaka Bangladesh

Prepared By :

Faults in Dyeing SectorFaults in Dyeing Sector

Woven Dyeing Faults

1. White spot 2. Color spot 3. Bug spot 4. Water mark 5. Crease mark 6. Long stripe 7. Uneven shade 8. Running shade 9. Listing effect 10. Dirty mark 11. Oil spot 12. Stop mark

Woven Dyeing Fault

Woven Dyeing Fault

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Causes:

a. Foreign particles present on fabric before dyeing

b. Foreign particles present in the solution

c. Hairiness present in fabric from brushing

1. White Spot

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2. Color Spot

Causes:1. Dyes & chemicals factors:

a. Poor Dispersion or Solubility Propertiesb. Unstable chemicalsc. Silicones in the dye bathd. Alkali residues in the goodse. Presence of iron

2. Improper Washing3. Operator negligence

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3. Crease Mark

Causes:

a.Lack of balance in construction of the fabric b.Pressure of padder rollerc.Direct Heating or Shock cooling

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4. Long Stripe

Causes:

a. Winding of yarn in padder roller

b. Improper pressure during brushing

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5. Uneven ShadeCauses:

a. Improper scouring

b. Improper bleaching

c. Improper mercerization

d. Low solubility of dyes & chemicals

e. Negligence of operators to solubilize dyes and chemicals

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6. Running Shade

Causes:

a. Change in pick-up percentage along the length of the fabric

b. Improper fabric Speed.

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1. Yarn Manufacturing TechnologyLink : http://www.facebook.com/pages/Yarn-Manufacturing-Technology/485014954866808

2. Fabric Manufacturing TechnologyLink : http://www.facebook.com/pages/Fabric-Manufacturing-Technology/459520217425605

3. Garments Manufacturing TechnologyLink : http://www.facebook.com/pages/Garments-Manufacturing-Technology/472364799463126

3. Wet processing TechnologyLink : http://www.facebook.com/pages/Wet-Processing-Technology-Dyeing-/468645219825404

4. Fashion-Design-and-TechnologyLink : http://www.facebook.com/pages/Fashion-Design-and-Technology/587655294583875?ref=ts&fref=ts

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