Printing Styles

Question 1

What is direct printing?

Answer 1

-when dyes or pigments are printed directly onto fabrics

Question 2

What is discharge printing?

Answer 2

• printing using a reduction process onto a solid coloured fabric
• the discharge paste destroys the colour where it is printed

Question 3

what are the two types of discharge?

Answer 3

• white

- illuminated

Question 4

What is Devore?

3

Answer 4

• printing using a chemical which destroys specific fibres, only printed onto fabric of paired mixed fibres
• alkali destroys protein fibre
• acid destroys cellulose

Question 5

Name two examples of mixed fibre fabrics appropriate for Devore.

Answer 5

• polyester/cotton

- wool/cotton

Question 6

How does Devore react on a silk/viscose velvet?

Answer 6

-destroys the pile and leaves the ground unharmed, causing a burn-out look

Question 7

What is resist printing?

Answer 7

• a resist paste is printed onto fabric before dyeing
• dye effects only the areas not covered by the paste
• paste removed, leaving a pattern

Question 8

What are the two types of resist processes?

Answer 8

• mechanical

- chemical

Question 9

What is mechanical resist? Name 2 examples.

Answer 9

• printed to form a barrier between fabric and dye, repelling the dye
• wax, fats

Question 10

What are chemical resists?

Answer 10

-printed first on fabric to prevent fixation of dye/ development of ground colour by chemically reacting with either the dye or reagents used for fixation