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Modern concept of garments dyeing

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Garment  dyeing technique
Garment dyeing technique
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Modern concept of garments dyeing

  1. 1. Company LOGO
  2. 2. INTRODUCTION MD. ASADUZZAMAN (PROTIK) ID: 122-202-041 BSc. In Textile Engineering
  3. 3. Garments dyeing Dyeing of fully fashioned garments Add color to finished garments Just in time dyeing PPT/PAT/RF D Sewn “Raw” & dyed after sewing GARMENTS DYEING 4
  4. 4. . . CATEGORIES OF GARMENT DYEING CATEGORIES 5
  5. 5. REASONS OF GARMENTS DYEING Cost effectiveness Quick response to market Dyeing with require quantities Time reduced Energy saving Special design Dyed with single color 6
  6. 6. SELECTION OF MATERIALS • Loom state fabric converted into RFD • Fabric pre- treated. • Free from foreign materials. • Same batches fabric. • Should be uniform. • Interlining checking • Button, Studs & zippers. • Free from nickel. • Polyester button for pre determined colour • Nylon preferred • Wooden to be verified. • Care label & Embroideries. • Cotton thread is preferred. • Core spun yarn is used • Low tension apply • High strength. • Free from hairiness • Polyester thread with pre- determined colour. • Stitch density • Thread tension • Stitch & seam type • Needle size AccessoriesFabric Sewing Thread Sewing 7
  7. 7. DYES USED FOR COTTON GARMENTS Reactive Dyes Direct Dyes Vat Dyes Sulphur Dyes Pigment Dyes 8
  8. 8. REQUIREMENT OF DYE STUFF SELECTION Fastness Cost of dye Shade range Machine parameters 9
  9. 9. Versatile machine(Temp.140 deg) Horizontal Lateral oval High Temp PADDLE DYEING MACHINE DRUM DYEING MACHINE ROTARY DRUM DYEING MACHINE •Multi purpose drum machine. •Dyeing temperature at 140 deg. •Perforated drum m/c. •Divided into four equal compartments. GARMENT PROCESSING MACHINES 10
  10. 10. HYDRO-EXTRACTOR MACHINE TUMBLE DRIER •Ideal machines for extraction of water. •Has a central rotating basket ball. •Machine is mounted on a triangle base. •Used after washing & dyeing. •Perforated stainless steel drum. •Loading & unloading done in front side or top of the machine. •Air comes out through exhaust duct. GARMENT PROCESSING MACHINES 11
  11. 11. 1 2 3 6 5 4 7 8 9 Garments from grey Fabric Desizing Scouring BleachingDyeingAfter treatment Washing & Rinsing Hydro- extraction Drying Ri n si n g WOVEN GARMENTS DYEING SEQUENCE 12
  12. 12. WOVEN GARMENTS MADE FROM PRE-TREATED FABRIC Pre-wash After treatment Washing & Rinsing DryingHydro- Extractor Garments Dyeing 13
  13. 13. Flow chart for Knit Garments PlanKnit wear Build Dyeing After Treatment Washing & Rinsing Hydro -extraction Drying Scouring & Bleaching Washing /Desizing 14
  14. 14. TECHNIQUE USED FOR GARMENTS DYEING Tie dyeing Dip Dyeing Spray Dyeing Over Dyeing 15
  15. 15. TECHNIQUE USED FOR GARMENTS DYEING Cold Dyeing High White Dyeing Washable Dyeing Reverse Dyeing Top Dyeing 16
  16. 16. Over dyed Dip dyed Spray dyed Evaluate Tie dyed Top dyed Cold dyed Different Technique applied garments 17
  17. 17. SPECIAL CHEMICALS • . Desizing Agents Scouring & Bleaching Agents Material Damaged Control Agent Others specials • Bacterial Alpha amylase • Non-ionic wetting agent • Biolase , Bactosol • Sandopan LFW • Sirrix A.K • Sandoclear 8160, Sandopan SF • Lanalbin PA Powder • AWN • Imacol brand • Sanden 8425 • Drimagen E2R 18
  18. 18. Mechanical finishing and Related process Using Microprocessor Steaming treatment Pressing stretching Ironing 19
  19. 19. SMART COLORANT FOR GARMENTS Color respond to differences temperature. Color respond to differences environmental conditions. Developed for specialized applications but now have become available for application on textiles/garment s. 20
  20. 20. CLASSIFICATION OF SMART COLORANTS Photo chromic color Thermo chromic color Glow in the dark color 21
  21. 21. PHOTO CHROMIC COLOR Ability to change color when exposed to sunlight. Generate dynamic reversible color change UV: Change molecular Structure of photo chromic material 22
  22. 22. COMPARISON …… . Dyeing after garment garment making. making. Les time required. Low cost of production GSM increased after dyeing. No possibility of shade variation. Sewing thread used from same fiber. Belly machine used. Garment Dyeing ………… Dyeing before garment making. More time required High cost of production. GSM also increased. Possibility of shade variation. No need of sewing thread. Jet/jigger/pad/winch used. Fabric Dyeing 23
  23. 23. CONSTRAINTS OF POST DYEING Not suited to all Fabric Desire d final appear ance are not availab le High damag e & repairs rate High risk of inappr opriate sewing thread Fabric shrinka ge Fabric swelling 24
  24. 24. RECENT DEVELOPMENT IN GARMENTS PROCESSING Inbuilt catalyst & softener. Microencapsulated fragrance finishes. Laser-based processing. Use anti microbial finishes. Water & oil repellent finishes. Flame-retardant finishes. Antiozonate finishes. UV absorber finishes. Coating individually. 25
  25. 25. SUPERIORITY & DISFAVOR Superiority Handling of smaller lots economically. Enables various special effects to be achieved. Distressed look can be effectively imparted. Unsold light shade can be converted into medium and deep shades. Lowest energy consumed. Latest fashion trends can be effectively incorporated by immediate feedback from the customer. Disfavor High cost of processing. A little complicated dyeing. Garment accessories like zips , buttons etc impose restrictions. 26
  26. 26. Traditional route can be compared with the garment dyeing route Discontinuous/continuous preparation Discontinuous/continuous dyeing Finishing Delivery to Garment manufacturer Cutting/sewing Storage Sales Discontinuous/continuous preparation Delivery to Garment manufacturer Cutting/sewing Storage Dyeing Sales Meantotaltimeapprox8weeks Traditional Method Woven/Knits Garment dyeing Method Woven/Knits MeanTotaltime2weeks 27
  27. 27. Problem occurred in GMT Dyeing Low tear strength of garments Patchy dyeing SmellSpotting •Formation of foam •Improper washing Degredation of cotton during pretreatment,d yeing & resin finishing Acetic acid,residual chlorine,catio nic softeners. •Starting tem. Too high. •Raising temp. too quickly. •Salt addition at high temp. •Addition of dyes & chemicals at once. CAUSE AND EFFECTS 28
  28. 28. CAUSE & EFFECTS Change in PH during cationization. •High rate of rinse in temperature during cationization. •Direct contact of steam with garment •Too low MLR hence uneven build- up of cationizer. Dyeing may cause corrosion to metalic parts like buttons, zippers etc. •Chlorine retention •High dosage of cationic softener •Ozone fading. Problem occurred in garment dyeing Blotchy/ unlevel dyeing Yellowing in denim Corrosion in metalic fittings Batch to batch shade 29
  29. 29. PRE-CAUTION TO BE TAKEN BEFORE GARMENTS DYEING Specific dyes used. Void mineral impurities. Imacol brand. Hot brand reactive dyes applying. Made from same lot & same source. Adjust seam strength. Prevent seam pucker. Proper dye selection. Avoid poor quality metal. Selection of sewing thread ,button. Used copper free dye. Used proper interlining. 30
  30. 30. Reduce waste water Reduce amount of dyes Reduce others chemicals If you don’t want to use the size of the fonts as used in this placeholder it is possible to replace it by selecting different options. The text demonstrates how your own text will look when you replace the placeholder with your own text. AVOID ENVIRONMENTAL HAZARDS 31

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