printing techniques and printing defects11

8/8/2019 Printing Techniques and Printing Defects11

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Printing Techniquesand Defects

Submitted By:

Meenal Gupta

Supriya Bag

Pooja Yadav

Vineet Kumar

Sumeet


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The printing methods like screen, roller,

heat transfer is capable of printing one

or more print types each with its own

unique properties.


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Direct Print

Discharge Print

Resist Print

Pigment Print


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In this design is printed directly onto

the white cloth or over a previous dyedfabric.

printed design must be darker then the

dyed background.

It is most common print technique.


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It is easy to recognize direct print through

its background color which is white and

printed design is a lighter shade.

The fabric is an over print if the background

color is the same shade on the face and

back.


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The background colour had been originally piece

dyed therfore the colour is richer and has great

depth.

Discharge print can be made with roller and screenmethod but not by heat transfer printing.

It is not widely used method because production is

very costly compare to direct dye.

Can be only used in high-priced lines.


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Two step process

The result is dyed background with a white

patterened area.

Printing pattern design on white fabric with

chemical or wax like resins, resist the

penetration of the dyes.

.

Piece dyeing of the fabric.

PR

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It is not a popular method.

Used where background colour in the fabriccannot be discharged.

This printing is performed as craft or handprinting such as Batik.


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Least costly type of print to produce because

Simpler to apply

Require least amount of processing because steaming

and washing are not required.

Pigments produce bright, rich color and may be

applied to all textile fiber.

Excellent fastness to light and dry cleaning.

Ex- used in drapery and curtain fabrics as well as

for apparel.


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They lose color gradually and become more

faded with each succeeding laundering or

dry-cleaning.

These prints usually show a faded

appearance after 20-30 dry-cleaning.


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Colour Drag- Colour of the print smears or smudgesfrom rubbing against an object before it becomes dry.

Colour Splatter-The print paste instead of beingplaced on the fabric is thrown or splattered onto thefabric surface.

Fuzzy Pattern - The edges of patterns are not sharp,clear lines, but are instead rather fuzzy lines. Mostfrequently caused by improper singeing orimproperly thickened print paste.


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Off-register- Printing rolls or screens improperlyaligned so pattern parts do not meet properly. Thisimperfection is also called out-of-fit or out-of-register.

Stop Mark- Colour streak across the fabric resultingfrom the printing machine being stopped during theprinting process and then starting again.

Tender Spots- In printed fabrics, one or more colours

of the print may cause weakened areas where theywere printed. Usually due to excessive use ofinjurious chemicals in the print paste. May also befound in the discharged area of discharge prints.


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Thank You!!!

printing techniques and printing defects11

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