Disperse Tinting for Polyester Woven Fabric in Stenter Machine for Overprinting Order (A practical approach)
Apart from theoretical understanding of dyeing, a practical approach is necessary to get desired outcome in dyeing operation. The detail technique based on the experiments is mentioned below, which would increase productivity side by side with lower costs and with lesser consumption of water. .
In order to get the maximum shades, in case of Polyester woven fabric dyeing (Exhaust method); it is advisable to maintain the temperature between 130-135 degree Celsius. For Example: - Jet dyeing machine is common for polyester woven and knitted fabric dyeing. However, it is advisable to maintain Temp between 100-105 degree Celsius (carrier method) to get selected light and medium shades only.
Stenter method for polyester dyeing;-
1) Thermosol method:
In this method, it is advisable to maintain temperature between 190-205 degree Celsius, as selection of dyes is very important. High sublimation fastness of dyes is required, however commercially exhaust method is highly accepted.
2) Carrier method:
In this method, it is advisable to maintain the temperature between 150-160 degree Celsius, and hence selection of dyes is also very important.
Printing order on dyed ground (some pastel shade) directly in bulk method
In Stenter following points should be considered before going for padding method:-
In stenter padding, maximum two sides only air pressure arrangement is maintained (Left hand side and right hand side).
should be cleaned properly otherwise there will be some chances of stain
With consideration of all points, light pastel shade should be selected for printing in 90 % design to prevent any problems. Hence, the pastel shade can be converted to medium or dark shade.
Exhaust dyeing drying and batching printing in rotary machine loop ager soaper m/c washing drying and finishing.
New Process (Experiment):
Stenter padding drying and batching printing in rotary machine loop ager soaper m/c washing drying and finishing.