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					                Acrylic Printing
                Printing with Basic dyes, steaming, washing
                -Basic dyes are cationic dyes, which give brilliant, strong and fast prints on polyacrylonitrile fibres.
                Owing to their simple handling, liquid types are generally preferred for textile printing.

Printing recipe: Basic powder types
                 Basic dye                     … g)
                 Glyezin A ( glycerine)        30 g ) paste with
                 GBcid AS 30%                  30 g ) and dissolve with
                 Boiling water                 250 g )
                 GBnatural Thickner FA         500-600 g
                 Eluysin S                     5 g
                 Or GBcid AS
                 Ammonium sulfate 1:2          15 g
                 Luprintan PFD                 30 g
                 GBantifoam                    2 g

                                               1000 g

                For Basic liquid types

                GBnatural Thickner FA          500-650 g
                GBcid AS                       10-20 g
                Ammonium sulfate 1:2                  15 g
                Luprintan PFD                  30 g
                GBantifoam                     2 g
                Basic dye                      …g
                Water or thickening            …g

                                               1000 g

              ( ‫ ) ﺑﻨﺰاﻳﻞ اﻟﻜﺤﻮل‬Benzyl alcohol ‫ أواﺿﺎﻓﺔ‬GBcid AS ‫ ﺑﺎﺿﺎﻓﺔ اﻟﺤﺎﻣﺾ‬Basic ‫١- ﺗﻌﺠﻦ اﻟﺼﺒﻐﺔ اﻟـ‬
                                              ‫ وﺑﻌﺪ ذﻟﻚ اﺿﺎﻓﺔ اﻟﻤﺎء اﻟﻤﻐﻠﻲ‬GBCID AS ‫وﻳﺴﺘﺨﺪم ﻣﻦ ٠٢-٠٣ ﺟﻢ‬
                                                                 Luprintan PFD ‫٢- ﻻﺑﺪ ﻣﻦ اﺿﺎﻓﺔ ٠٣ ﺟﻢ / ك‬
                                      ‫٣- ﻓﻲ ﺣﺎﻟﺔ اﻣﻜﺎﻧﻴﺔ اﻟﺘﺤﻀﻴﺮﻻﺑﺪ وان ﻳﻜﻮن ﺧﺎم اﻻآﻴﺮﻟﻚ ﺑﻴﺘﺸﺮب ﺗﻤﺎﻣﺎ ﺑﺎﺳﺘﺨﺪام‬
        GBdetergent GB Conc (defaming + dearating + wetting……)


                                                                  ‫ﻓﻘﻂ ﻓﻲ ﺣﺎﻟﺔ اﻣﻜﺎﻧﻴﺔ ﻏﻠﻴﺔ اﻟﺨﺎم ﻟﺘﺤﺴﻴﻦ ﺧﻮاص اﻟﺘﺸﺮب‬
                        Only for poor wettability and a high residual fat content can be responsible for

              ___________________________________________________________________________________
                 9, square 1163 ,El Shaheed Fouad Thabet St., El Wozara square Sheraton Heliopolis – Cairo-Egypt
            Cairo Tel.   : 0020٢ 22683983                 Alex. Tel.     : 00203 4278007
                  Fax    : 00202 22684663                    Fax    : 00203 4200882
                  Mobile : 002012 3109645 / 002012 8099699   Mobile : 002012 1148181
                  E-mail : gammy.botros@link.net             E-mail : gbchem.alex@link.net
                  E-mail : gbchem@gbchem.net
                                                 www.gbchem.net
                         -     problems in sticking the fabric down on the printing blanket,
                         -     a reduction in the printing speed due to poor wetting,
                         -     uneven prints,
                         -     poor print definition ,
                         -     Inadequate fastness of the prints.

                  The purpose of the washing treatment is therefore to remove these spin finishes and thus
                  eliminate them as a source of faults. After washing, the fabric should contain no more than
                  0.1% residual spin finish.

Detergents needed for acrylic fabrices

GBdetergent GB Conc GBdetergent GB Conc is a mixture of anionic and nonionic emulsifiers that has a
                    synergistic action, i.e. the combined efficiency of its balanced nonionic and anionic
                    constituents is match greater than the efficiency of the seprate components.

                         GBdetergent GB Conc

                         -     is also able to remove spin finishes that contain too little or no emulsifier, and
                               which cannot be re-emulsified with normal detergent,
                         -     exhibits its full detergency in all temperature ranges,
                         -     has no cloud point,

                             GBdetergent GB Conc is stable to

                         -     water-hardening substances,
                         -     metal salts,
                         -     alkalis and acids.

                         GBdetergent GB Conc therefore has an optimum washing action. The wash bath for
                         the pretreatment of print goods composed of polyacrylonitrile fibres is acidified with
                         GBcid AS and, apart from GBdetergent GB Conc, it should also contain Trilon TA if
                         a complexing agent is necessary. Alkaline wash baths are not recommended, because
                         residual alkali on the material can be responsible for faulty prints. It is important that
                         the bath temperature is higher than the melting point of the oils and fats present. The
                         concentration of GBdetergent GB Conc used depends on the amounts of fat and oil
                         that have to be emulsified. AS a "rule of thumb", a relationship of 1:5 applies, i.e.
                         0.2 g GBdetergent GB Conc is necessary to emulsify 1 g fat or oil.


Dry               3 min at 110 C.
                  Note that certain cationic dyes are sensitive to high temperatures!
         ___________________________________________________________________________________
           9, square 1163 ,El Shaheed Fouad Thabet St., El Wozara square Sheraton Heliopolis – Cairo-Egypt
      Cairo Tel.   : 0020٢ 22683983                 Alex. Tel.     : 00203 4278007
            Fax    : 00202 22684663                    Fax    : 00203 4200882
            Mobile : 002012 3109645 / 002012 8099699   Mobile : 002012 1148181
            E-mail : gammy.botros@link.net             E-mail : gbchem.alex@link.net
            E-mail : gbchem@gbchem.net
                                           www.gbchem.net
Steam               Steaming process               Saturated       pressure        HT steam
                                                   Steam           steam

                    Steaming conditions            102° C          1.2-1.5 bar     120-130° C
                                                   20-30 min       20 min          6 min

                    * With 50-100 g/kg urea in the print paste


Luprintan PFD Luprintan PFD is a fixing agent with the following range of action:

                    -   improvement in the colour yield and brilliance in all batchwise and continuous steaming
                        processes,
                    -   instead of batchwise dye-fixation in the star steamer, it also allows continuous fixation
                        in the festoon steamer without any reduction in the depth of shade or brilliance,
                    -   increased processing reliability during steaming,
                    -   shorter steaming times.

Glyezin A           Glyezin A is necessary to dissolve Basic powder dyes. With the Basic
                    Liquid types, an addition of 20-30 g/kg Glyezin A to the print paste promotes the dye
                    fixation and levelness of the prints.

Benzy1 alcohol      The addition of 10-20 g/kg benzy1 alcohol, as special dye solvent, reduces the risk of dye
                    agglomeration and speck formation, Dye-dissolving problems and specks may occur when
                    the thickening dye system is not well balanced.

                    In flat screen-printing, it is necessary to check that the screen lacquer is resistant to benzy1
                    alcohol.

Drying              Some cationic dyes are temperature-sensitive and it is therefore important to ensure constant
                    drying conditions. To ensure the reproducibility of the shades, either the drying time must
                    be reduced if the recommended temperature is exceeded, or the temperature reduced if the
                    recommended drying time is exceeded.




Steaming            steaming is carried out continuously with saturated steam at atmospheric pressure or
                    batchwise with pressure steam.

          ___________________________________________________________________________________
             9, square 1163 ,El Shaheed Fouad Thabet St., El Wozara square Sheraton Heliopolis – Cairo-Egypt
        Cairo Tel.   : 0020٢ 22683983                 Alex. Tel.     : 00203 4278007
              Fax    : 00202 22684663                    Fax    : 00203 4200882
              Mobile : 002012 3109645 / 002012 8099699   Mobile : 002012 1148181
              E-mail : gammy.botros@link.net             E-mail : gbchem.alex@link.net
              E-mail : gbchem@gbchem.net
                                             www.gbchem.net
                  In all continuous steaming processes, the fixing agent Luprintan PFD ensures optimum dye
                  fixation, even under unfavourable steaming conditions. The use of this product thus
                  increases the processing reliability and ensures good reproducibility of the prints.

                  In principle, it is also possible to steam with superheated steam. For this fixation process,
                  the print pastes must contain 50-100 g/kg urea. It should be noted, however, that the depth
                  of shade and brilliance of prints fixed in high temperature stem are not always up to the
                  standard obtained by fixation with saturated steam.

                  In pressure-steam or HT-steam fixation (steam temperature higher than 102° C attention
                  must be paid to the temperature-sensitivity of certain cationic dyes.

Washing           The degree of fixation of cationic dyes depends on the particular type of polyacrylonitrile
                  fibre. During the washing process, even the first rinsing bath can there fore become very
                  heavily contaminated with loose dye. This is not important in cold rinsing baths, but there is
                  the risk of loose dye staining the fabric at the higher temperature in the wash baths.
                  For this reason, most of the washing time available should be used for rinsing the prints cold
                  in order to remove as much unfixed dye as possible.

                  The washing recipes and the sequence of the wash baths depend on the nature of the print
                  design and the fabric quality.




          ___________________________________________________________________________________
          9, square 1163 ,El Shaheed Fouad Thabet St., El Wozara square Sheraton Heliopolis – Cairo-Egypt
     Cairo Tel.   : 0020٢ 22683983                 Alex. Tel.     : 00203 4278007
             Fax    : 00202 22684663                    Fax    : 00203 4200882
             Mobile : 002012 3109645 / 002012 8099699   Mobile : 002012 1148181
             E-mail : gammy.botros@link.net             E-mail : gbchem.alex@link.net
             E-mail : gbchem@gbchem.net
                                            www.gbchem.net

				
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