PPT FINAL PRINTING

TEXTILE PRINTING

CONTENTS: • INTRODUCTION • TRADITIONAL PRINTING • CONVENTIONAL PRINTING • MODERNISED PRINTING • PRINT MEDIUMS

INTRODUCTION

WHAT IS PRINTING ? PRINTING IS NOTHING BUT APPLYING COLOUR ON THE FABRIC BY VARIOUS MEANS

Printing styles Direct printing Over printing Discharge printing Resist printing

Printing methods

•Traditional printing •Conventional printing •Modernized printing

Traditional printing •Hand block printing •Batik printing •Tie- dye printing •Ikat printing

Hand block printing •It is very slow method •It is done where the labor is cheap •It can’t be produced in large quantity

Designs are carved with wooden or metal blocks in that dye paste is applied and press firmly wherever we need

costly

Batik printing •costly

Designs are made with wax on a fabric which is subsequently immersed in a dye to absorb a colour on the unwaxed portions

The patterns are generally in geometric, floral, bird or animal Two methods •Tjanting •Tjap

Tie dye printing

•Costly process

Dye is resisted by knots that are immersed in the dye bath. The outside of knotted portion is dyed, but the inside is not penetrated if the knot is firmly tied. Partial penetration occurs when the knot is not tight The process can be repeatedly by making additional knots in the fabric

Ikat printing It is a ancient method of fabric coloration by tiedyeing bundles of warp and /or weft yarns prior to weaving is ikat.

The colours usually indigo, red, and brown are placed along the length of the yarns in anticipation of design that is to be woven

Conventional printing

Roller printing Warp printing Flat bed screen printing Rotary screen printing Stencil printing

Roller printing Roller printing is the machine method of printing designs on cloth by engraving rollers. It turns out colour- designed fabrics in vast quantities at the rate of 1000 to 4000 yards an hour. It is very in expensive process when compare to hand method

Warp printing Warp printing is roller printing applied to warp yarns before they are woven into fabric. Fine white or neutral – coloured filling yarns are generally used for weaving so that the design on the warp will not be obscured

Screen printing

•flat bed screen printing •Rotary screen printing

Flat screen printing machine

Rotary screen printing machine

Stencil printing In stencil printing the design must first cut in cardboard, wood or metal. The stencil may have a fine delicate design or there may be large space through which a great amount of colour can be applied. A stencil design usually limited to application of only one colour and is generally used for narrow widths of fabric.

Modernized methods of printing

•Digital (ink-jet ) printing •Heat transfer printing •Electrostatic printing •Foil printing

Digital ink jet printing

•In this instead of wax based ink normal black ink is used for image formatting on screen. • This ink system is very cheap and works trouble free and offers a excellent engraving results

Heat transfer printing

•Moving a design from one surface to another is known as transfer printing. •Generally from paper to a textile material.

Two types:

Dry transfer printing Wet transfer printing

Electrostatic printing A process of mixing a finely powered dye with a carrier, such as a natural or synthetic resin, that has high dielectric properties for electrostatic printing.

The dye is spread on a screen bearing the design, and the fabric is passed into an electrostatic field under the screen, which is held about 0.5 inch above the cloth.

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Foil printing

• The transfer of the foil to paper or plastic is done by using a metal die, heat and pressure. • Foil printing can be done in single, multiple colours, rainbow colour or in a holographic pattern.

Print mediums

Khadi print

Pigment print

Plastisol Rubber High density

Puff print

Spray print

Gel print

Sugar print

Glitter print

Embossed print

Flock print

CAD print

Photo print

Thank you Presented by

Srikanth MANKARI