Surface treatments and finishes (AQA GCSE Design and Technology): Flashcards
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Practise the cards
15 cards from this deck
What two qualities do surface treatments enhance?
What two qualities do surface treatments enhance?
Functional and aesthetic qualities
Definition of dyeing
Definition of dyeing
Using coloured pigments to alter appearance of yarn/fibre/fabric
Sources of natural dyes
Sources of natural dyes
Plants, roots, berries, and flowers
Environmental benefit of natural dyes
Environmental benefit of natural dyes
Break down naturally without causing ecological harm
Sources of chemical dyes
Sources of chemical dyes
Petroleum-based materials and various minerals
Three advantages of chemical dyes
Three advantages of chemical dyes
Vibrant colours, reduced costs, simpler processing
Dip dyeing technique
Dip dyeing technique
Immersing only selected sections of fabric into dye solution
What does direct printing use to transfer colour?
What does direct printing use to transfer colour?
Blocks made from wood and foam
How resist dyeing works
How resist dyeing works
Treating areas to prevent dye absorption, creating patterns
Blocking agent used in batik
Blocking agent used in batik
Wax
Patterns produced by tie dyeing
Patterns produced by tie dyeing
Swirled, circular, or radial patterns
Purpose of mordants
Purpose of mordants
Help dye bond with fabric fibres and ensure colour stability
Which fibres absorb dyes more effectively?
Which fibres absorb dyes more effectively?
Natural fibres (compared to synthetic materials)
Purpose of flame retardant treatments
Purpose of flame retardant treatments
Reduce fabric flammability for safety
Materials used for waterproofing fabrics
Materials used for waterproofing fabrics
PVC or polyurethane