Polyester is the most used synthetic fiber of the world. Polyester fiber is dyed with disperse dyes. If we want, we can dye the fiber during yarn preparation. Also we can dye the yarn after yarn preparation and in fabric form. The fastness properties of polyester dyed yarn are excellent. Day by day the use of synthetic fiber increases rapidly.Dyeing sequence of polyester is given below:
Carrier and vessel washed by hydrose and caustic at 1000 C for 20 min
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Load the package in the carrier and feed in the vessel
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Add washing agent and run at 800 C for 20 min
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Dyeing period
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Add leveling agent and acid, run at 600 C for 10 min
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PH check
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Color mixing at 700 C for 40 min
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Color dosing at 600 C for 20 min
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Polyester dyeing at 1350 C at 20 gradient for 50 min
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Sample check
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Ok
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Temperature cool down at 780 C and drain
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Hot wash for 10 min
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Rinse for 15 min for light shade and 25 min for dark shade
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Add hydrose, soda ash, run at 800 C for 20 min
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Drain
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Rinse for 10 min
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Neutralization by acetic acid at 500 C 20 min
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So, that’s all about the polyester dyeing as well as synthetic yarn dyeing. You can try it in your practical life and give me a feedback about the result of dyeing process of polyester.
nice blog, disperse dye , i am read this information and i am really impress to this type of information. thanks for sharing thi blog with us!!!!
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