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Prepared By : 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
Faults in Dyeing Sector Faults in Dyeing Sector
Yarn Dyeing Faults Yarn Dyein g Fault 1. Package un-level 2. Package to package shade variation 3. Color spot 4. Ring mark 5. Dirt mark
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
Packag e Unlevel 2. Package to Package shade variation Causes: Causes: a. Improper setting of yarn packages in the machine a. Improper setting of yarn packages in the machine b. Lot mixing of the packages b. Lot mixing of the packages c. Count variation of packages c. Count variation of packages
3. Color Spot Packag e Unlevel P 2 P shade variatio n Causes: a. Floating of dye particles in the air b. Improper per-oxide killing c. Hardness of water d. Improper mixing of dyestuffs
5. Ring Mark Packag e Unlevel Causes: a. Improper drying of the packages b. Improper peroxide killing P 2 P shade variatio n Colo r Spot 4. Dirt Mark Causes: a. Dirty handling of the packages b. Presence of dust in the air Figure: Dirt mark
http://www.textilelab.blogspot.com (Visit ) My Facebook Textile related Pages 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 Link : http://www.facebook.com/pages/Fashion-Design-and-Technology/587655294583875?ref=ts&fref=ts