The textile is dyed thanks to a discontinuous process (full exhaustion method). Dyestuffs are gradually fixed into the fabric. Some fibres such as PET need higher temperatures.

 

In a discontinuous process, all kinds of fibres, knittings or fabrics can be dyed. Almost all kinds of dyestuffs can be used (dispersive, acidic, reactive and vat-dyes). Different kinds of machines are dedicated to the discontinuous dyeing:

 

Material in motion and static batch (Jigger, Winch)

Batch in motion and static fabric (Autoclave)

Both fabric and batch in motion (Over-flow, Air-flow and Jet)

 

                                   Over-flow: big water ratio

                                   Air-flow: small water ratio, fabrics in rope form

                                   Jet: ventilation system, with rope opening