Yarn dyeing faults

Package to package shade variation 3.. Dirt mark Yarn Dyein g Fault... Tension variation while soft winding of the package b.. Lot mixing of yarns in the same package c.. Improper p

Southeast University

Prepared By : Mazadul Hasan sheshir ID: 2010000400008

13th Batch (session 2009-2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com

Blog : www Textilelab.blogspot.com (visit)

Southeast University

Department Of Textile Engineering

I/A 251,252 Tejgaon Dhaka Bangladesh

Prepared By :

Faults 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

Packag

e

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

Packag

e

Unlevel

P 2 P

shade

variatio

n

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

Packag

e

Unlevel

P 2 P

shade

variatio

n

Colo

r

Spot

1 Yarn Manufacturing Technology

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

2 Fabric Manufacturing Technology

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

3 Garments Manufacturing Technology

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

3 Wet processing Technology

Link : http://www.facebook.com/pages/Wet-Processing-Technology-Dyeing-/468645219825404

4 Fashion-Design-and-Technology

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