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Textile Printing Techniques by Sukhvir Sabharwal
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Textile Printing Techniques by Sukhvir Sabharwal

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Textile Printing Techniques.

Textile Printing Techniques.

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  • 1. . d . : . ,..
  • 2. I--
  • 3. Textile PrintingThe application of color to a fabric in a design or pattern(localized dyeing)Modern printing generally incorporates one of the following techniques: Flat-bed screen printing Rotary screen printing Engraved roller printing - Heat transfer printing*- 17-2 Textile Mntlng
  • 4. I Types Of Printing Processes Automatic Flat Screen Printing A Approximately 17%of printed goods B. Advantages 1. Largerepeats 2. Multiple strokes for pile fabrics C. Disadvantages 1. Slow 2. No continuous patterns Rotarv Screen Printing k Approximately 50% of printed goods B. Advantages 1. Fast 2. Quick changeover of patterns 3. Continuous patterns C. Disadvantages 1. Design limitations 2. Small repeats& Engraved Roller PrintingI A Approximately 26%of printed goods B. Advantages-- 1. High design capability a. Finedetail b. Multiple tones Textile Mnnng 17-3
  • 5. C. Disadvantages 1. Copper cylinders very expensive 2. Not economical for short runs 3. Requires highly skilled workersHeat TransferPrintingk Approximately 7% of printed goodsB. Advantages 1. High quality prints 2. Fewer seconds 3. Economical for short runs 4. Practically pollution freeC. Disadvantages 1. Slow 2. Primarily only for polyester
  • 6. Steps In Printing Process1. Preparation of print paste2. Printing of fabric3. Drying4. Fixation of dyestuff5. Washing - off T xfe Prlntlng 1 7 4 e tl
  • 7. I Preparation Of Printing PastesType of specific formulation used depends on the fiber, the colorantsystem used and, to some extent, the type of printing machine.TvDicaZ Inmedients Used Include: Dyes or pigments Thickeners Binders, cross-linking agents . Sequestrants Dispersing agents - surfactants Water-retaining agents (humectants) Adhesion promoters Defoamers Catalysts Hand modifiers
  • 8. Flat-Bed Screen PrintingMechanization of hand screen processFabric glued to blanketScreens rise and fallPrinting done while screen i down position nRod or blade squeegee systemUp to four strokes possibleSlow process TextfleMntlng 17-7
  • 9. Figure 17- 1 Flat-Bed Screen PrintingTake-up Dryer CuringOven PrintingArea 1 7 6 Textile Rlnting
  • 10. TextpeMntlng 17-9
  • 11. Rotary Screen PrintingContinuous screen printing processFabric glued to blanketFabric moves under rotating screensRod or blade squeegee systemFine adjustments easily madeSpeeds up to 100 yd/min 17-10 Textlie Mntlng
  • 12. IFigure 17-2 Rotary Screen Printing Squeegee Principle
  • 13. 1 Figure 17-3 Diagrammatic View Of A Roller-Printing System-- 17-12 Textile Wntlng
  • 14. Heat Transfer Printing Advantages - Easier handling of units - Easier training of operators -Better registration and clarity - Fewer seconds - Inventory i paper n -Pollution - free Disadvantages a -Slow - Limited to synthetic fibers, mainly polyester_- Textile Printing 17-13
  • 15. Ef / t 17-14 Textlle Mnling