What is the Relative merits and demerits of Rope and Slasher dyeing?

Relative merits and demerits of Rope and Slasher dyeing:

• Generally rope dyeing denim range produces better quality of denim than slasher dyeing.
•  Rope dyeing means for higher production and long runs. Ropes dyeing can more lots without any stoppages at set change. In case of sheet dyeing, the machine remains stop at set change.
•  In rope dyeing better dry and wet fastness properties in denim fabric can be achieved, than sheet dyeing.
• In sheet dyeing good quality yarn is required, as mending of broken ends is very difficult in sheet dyeing. This problem is less in rope dyeing.
• Sheet dyeing produces more waste than rope dyeing.
• Lot to lot, set to set shade consistency is better in rope dyeing,
• In sheet dyeing, there is a problem of center to selvedge shade variation. This can be caused due to uneven nip pressure, non-uniform chemical and colour content in dye boxes. This problem can also occur in rope dyeing as well. But proper rotation of the dried yarn cans at spreading and winding and even distribution of warp yarns over the full width of the fabric minimize the problem.
• The wetting and immersion time, oxidation time of dyed yarn are less in sheet dyeing due to parallel warp threads.