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

Yarn Dyeing Faults

1. Package un-level 2. Package to package shade

variation 3. Color spot 4. Ring mark 5. Dirt mark

Yarn Dyein

g Fault

1. Package Unlevel

Causes:a. Tension variation while soft winding of the package

b. Lot mixing of yarns in the same package

c. Different counts of yarns in the same package

d. Pressure variation in the machine vessel

e. Improper pretreatment of the yarn

f. Improper quality of the dyes and chemicals

g. Improper acid treatment after scouring and bleaching

2. Package to Package shade variation

Causes:

a. Improper setting of yarn packages in the machine

b. Lot mixing of the packages

c. Count variation of packages

Causes:

a. Improper setting of yarn packages in the machine

b. Lot mixing of the packages

c. Count variation of packages

Package

Unlevel

3. Color Spot

Causes:

a. Floating of dye particles in the air

b. Improper per-oxide killing

c. Hardness of water

d. Improper mixing of dyestuffs

Package

Unlevel

P 2 P shade

variation

5. Ring Mark

Causes:a. Improper drying of the packages b. Improper peroxide killing

4. Dirt Mark

Causes:a. Dirty handling of the packages b. Presence of dust in the air

Figure: Dirt mark

Package

Unlevel

P 2 P shade

variation

Color

Spot

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

My Facebook Textile related Pages

http://www.textilelab.blogspot.com (Visit )