A2 Section C - Printing of Fabrics

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What are the advantages of printing over dyeing? Give 2 reasons.
Greater scope for designing, more colours can be produced, complicated designs can be produced, methods are varied, usually costs less
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How can they be distinguished?
The printed design is only clear on one side.
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How is a fabric repeated (types)? Why is attention to this important?
Full drop, half drop and brick repeat; stop unintentional lines
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What is the difference between pigments and dyes?
Dyes are soluble in water, pigments are not. Dyes are made into a thick paste whereas pigments are fixed using a synthetic resin binder.
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What are the 2 different methods of screen printing called?
Flat screen printing; rotary screen printing
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What is flat screen printing?
Fabric is fed onto a table, where different screens use a different colour to add to the pattern, building it up. Fabric is then dried and finished.
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What is rotary screen printing?
Screen is a mesh rolled, and each screen adds a different colour. Dye is fed to the centre of the rollers and pushed out of holes in the rollers to give the pattern.
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Why is rotary screen printing popular?
Quick and efficient
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What is roller printing?
Fabric is fed on a roller, and a series of other rollers transfer dye from colour troughs to engraved rollers which print the pattern onto the fabric.
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What is transfer printing?
Similar to iron on transfers. Design is printed on special paper and wound onto a roller. A dry heat press transfers the design. The heat turns the dye to vapour which transfers to the fabric under pressure.
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What is transfer printing also known as?
Sublimation printing
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What is the resist dyeing technique?
Fabric is printed with chemicals to prevent dye being taken up in certain areas. Also includes tie dye and batik.
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What is the direct dyeing technique?
Design is printed directly onto the fabric
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What is the discharge dyeing technique?
The dyed fabric is printed with a paste containing chemicals which destroy the dye in areas according to the design.
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Other cards in this set

Card 2

Front

How can they be distinguished?

Back

The printed design is only clear on one side.

Card 3

Front

How is a fabric repeated (types)? Why is attention to this important?

Back

Preview of the front of card 3

Card 4

Front

What is the difference between pigments and dyes?

Back

Preview of the front of card 4

Card 5

Front

What are the 2 different methods of screen printing called?

Back

Preview of the front of card 5
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