Dyeing Processes Flashcards
For natural or synthetic fibres
Good dye penetration
Adding colour at fibre stage
Stock
Only for manufactured fibres
Added before extrusion
Excellent colourfastness
Expensive
Solution
Adding colour after fibre has been spun to yarn
Excellent dye penetration
Expensive
Yarn
Primarily used for solid colour fabrics
Continuous length of dry cloth
Passed full width though a trough of hit dye splitting
Cloth between padded rollers squeezes colour evenly
Removing excess solution
Piece
Used for simple products such as tshirts when grey goods are batch dyed
Garment
Yarn wound in bundles
Yarn dying
Yarn is wound on packages with a hollow center
Package dye
Yarn is wound on warp beam
Beam dye
Most common method of fabric dying
Piece dying
Fabric is stitched end to end and circulated through bath dye
Winch dye
Streams of pressurised dye in an enclosed system
Jet dye
Submerged fabric circulates in a continuous dye bath
Jet dyejng machines
Fabric is lifted in and of the bath by a rotating drum
Winch dyeing machines
For dyeing warp knitted fabrics and open construction woven fabrics
Beam dyeing machines
Types of dye: natural and cellulose based dyes
Direct dye
Reactive dyes
Vat dyes
Types of dye for synthetic
Acid dyes
Disperse dyes
For LIGHT shades on COTTON and VISCOSE
Direct dye
For DARK SHADES on cotton and viscose
Reactive dyes
Materials dyed in large bucket like container with a moving arm
Vat dye
All shades of nylon
Acid dyes
All shades of polyester
Disperse dyes
