A2 Section C - Fabric Manufacture 0.0 / 5 ? TextilesTextilesSection AFabricsManufactureA2/A-levelAQA Created by: tinkymorrisCreated on: 15-04-15 11:22 What is desizing? Size (starchy substance) applied to warp yarns before they are woven to strengthen them. Most are soluble in water so can be removed. 1 of 20 What is scouring? Removes fatty & waxy impurities that would stop the fabric getting wet. Washed in solvents. Not suitable for wool. 2 of 20 What is bleaching? Removing unwanted colour using bleach before dyeing. 3 of 20 Give 3 types of dye. Direct, Reactive, Vat, Disperse, Acid 4 of 20 Which fibres can direct dyes be used for? Cellulosic, inc. cotton 5 of 20 Which fibres can reactive dyes be used for? Cellulosic, protein, nylon 6 of 20 Which fibres can vat dyes be used for? Cellulosic 7 of 20 Which fibres can disperse dyes be used for? Acetate, polyamide, acrylic, polyester 8 of 20 Which fibres can acid dyes be used for? Protein, polyamide 9 of 20 What are solvent dyes? Recently developed, applied to fabrics using solvents instead of water. Expensive equipment and recovery so it can be used again 10 of 20 What issues need to be considered when dyeing a fabric? Colour requirements, fastness requirements, cost 11 of 20 Why might poorer quality dyes be used? Only ones that produce that shade 12 of 20 What are the 3 processes of dyeing a fabric? Immersing fabric,dye attaching itself, fixing the dye to the fibre 13 of 20 Give 4 reasons a fabric may need colour fastness. Bleaching, dry cleaning, washing, light, perspiration, gas fumes, rubbing 14 of 20 Name 3 different types of dyeing fabric. Dope dyeing, stock dyeing, yarn dyeing, piece dyeing, garment dyeing 15 of 20 What is dope dyeing? Dye added to the spinning solution of man-made fibres before spinning. Good light and wash fastness. 16 of 20 What is stock dyeing? Fibres dyed in loose form. Cheap. Any uneven dyeing removed in blending process 17 of 20 What is yarn dyeing? Yarns dyed before made into a fabric 18 of 20 What is piece dyeing? woven or knitted fabrics dyed as fabric pieces 19 of 20 What is garment dyeing? Made up garments dyed. Allows colour to be added at last minute to meet trends 20 of 20
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