Dyeing and Finishing
The new developed process allows for the first time to treat narrow fabric separately on both sides, i.e. this process makes it possible to dye belts with different colours, comprising also a considerable reduction of paint and of drying energy.
Up to now, the principle of the new technology for dyeing and finishing, developed by SONOTRONIC is unique in the textile world and is similar to a printing process: The belt is no more immerged into the dye or into a finishing agent; Instead the dye or the finishing agent are first applied to one belt side and then (after deflection) to the other one.
With this process it is no more necessary to squeeze the excessive liquid out of the belt. With this two-sided technology, the belt absorbs only about 15 % of moisture because it does not need to be washed several times. This has the effect to shorten the drying period considerably, saving energy and costs in general.
This new technology grants a good dyeing or finishing quality with at the same time a very low consumption of dye or of finishing agent. The fact that dyeing happens separately on both sides of the belt, makes it possible to dye both sides with a different colour. The dye must be correctly adapted to this process in order to achieve optimum colour intensity. You can use disperse dyes as also pigment dyes.
Schematic representation of a dyeing machine
- Intake area
The material enters the system and passes through the disentagler and the intake drive.
Transport to the first dyeing module. - First dyeing module
Sparing application of the colour or of the finishing agent to the first side of the material. - Intermediate drying with
deflection roller.
Drying of the processed side with infrared lamp.
Deflection of the material and transport to the second dyeing module. - Second dyeing module
Sparing application of the colour or of the finishing agent to the second side of the material. - Outlet area
Driven outlet of the material.
Handover of the material to further drying or thermofixing installations, according to the special application.
Double side dyed belt: the first side in blue, the second one in yellow |
