Southeast University
Prepared By : Mazadul Hasan sheshirID: 201000040000813th Batch (session 2009-2013)Department : Wet Processing Technology Email: [email protected] : 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
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