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    Thursday, September 21, 2017

    Method of polyester dyeing | Polyester Dyeing process

      Method of polyester dyeing : 


    There are 3 methods of polyester dyeing .they are


     Carrier method


      Pad thermosol method


      High temperature high pressure method


     


      Polyester Dyeing process


    Carrier method:


    This process is used for dyeing polyester/cellulosic fibre fabrics in jigger or winch-beck.



    Dye paste with dispersing agent with water



     Raise temp 60*C & add chemicals with materials


     


     Maintain pH with acetic acid 4.5-5.5



     Raise temp 95*C for 45 min



    Wash


                  


    Dry



    Delivery


     


     .  HTHP METHOD :


     


    Paste dye  with dispersing agent



     pH control with acetic acid&  keep it 4.5-5.5


         


    add material at 60*C



     raise temperature at 130 & run the bath for 1 hr


           


     rinse & wash 


      


     dry & delivery


     process curve : 


    Method of polyester dyeing | Disperse Dye for Polyester | Why call disperse dye | Application of disperse dyes | Features of of disperse dyes | Chemical Classification of disperse dyes | Chemical composition of of disperse dyes | Mechanism of disperse dyes | dyeing polyester with disperse dye | Method of disperse dyeing | Disperse dyeing process | Disperse dyeing process graph| Chemical reaction of disperse dyes | Comparision between three disperse dyeing process | Comparision between Carrier , HTHP and Thermosol | Textile Study Center | textilestudycenter.com


    .  pad thermosol method


    it is a continuous method of dyeing . in this process 180-220* C temp is needed. Dyeing can be possible within very short time like 1-2 min. it has 4 steps


    1. padding

    2. drying

    3. thermofixing

    4. after treatment

      Process:


     padded with dye with chemical



    dryed in IR dryer



    thermosol unit in 180-220 *C for  60-90s



    wash to remove unfixed dye


     


      Thermosol process curve


     


    Method of polyester dyeing | Disperse Dye for Polyester | Why call disperse dye | Application of disperse dyes | Features of of disperse dyes | Chemical Classification of disperse dyes | Chemical composition of of disperse dyes | Mechanism of disperse dyes | dyeing polyester with disperse dye | Method of disperse dyeing | Disperse dyeing process | Disperse dyeing process graph| Chemical reaction of disperse dyes | Comparision between three disperse dyeing process | Comparision between Carrier , HTHP and Thermosol | Textile Study Center | textilestudycenter.com


     



    Method of polyester dyeing | Polyester Dyeing process
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