Requirements to be Met by Pretreatment Processes

Chemical-Technological Requirements

• Optimal elimination of admixtures (impurities)
• Uniformity of effects (no spots); levelness
• High absorbency
• Low ash content
• High degree of whiteness
• Absolute absence of husks
• Optimum swelling of the fibres
• High dye absorbing power
• Elimination of dead and unripe cotton
  

Mechanical-technological requirements

• Good dimensional stability
• Crease and wrinkle resistance
• Minimum loss in DP
  

Economical-ecological requirements

• Shorter processes
• Shorter reaction times
• Less energy consumption
• Less labour time
• Less chemical consumption
• Less water consumption and thus less effluent