These are basically bis monochforotriazine reactive dyes with low reactivity and higher substantivity. These dyes are characterised by high exhaustion and fixation values. Washing off of dyed goods is easier due to higher fixation which results in saving of water and energy. Pollution problems are also minimised since the drained liquor contains minimal of unfixed dyes due to higher fixation. The main features of Camex 'HE' dyes are Excellent reproducibility and hence batch to batch variation is minimised. High tinctorial value due to excellent build up properties Eco friendly due to higher fixation values. Wide range of application. Better fastness properties. Wide range of application since it is suitable for all types of cellulosics materials like yarn, fiber, piece dyeing and garments. Dyeing Methods : These dyes are suitable for dyeing with different Methods and also have wide choice of equipments to be used for dyeing. The dyeing Method depends upon the type of substrate to be used and also the machinery to be used. These dyes are suitable for winch dyeing, Jet Dyeing, Package dyeing and beam dyeing machines. (1) Salt addition in even lots.: This process is used where liqour is stationary in the machine and is suitable for all depths of shades. Diagram not to scale   (2)Salt Addition at start This process is used for machines where liquor is circulating and substrate is stationary. Diagram not to scale This Method is suitable for medium to heavy depths.   (3)Both Salt and Alkali at start: This process is also recommended for machines where liquor is circulating and substrate is stationary, but this process is mainly suitable for unmercerised cotton and for dyeing binary combination from medium to heavy shades. Diagram not to scale A mixture of soda ash and caustic soda is recommended for this Method. Depth of shade Soda ash gm/l Caustic soda gm/l upto 1% 5 0.2 Above 1 % 5 0.5   (4) Migration Method   This process is used for machines having microprocessor controlled addition systems for dyeing pale shades below 0.5% depth. However this Method can also be used for dyeing all depth of shades on mercerised cotton and viscose packages. Diagram not to scale   (5)Isothermal Method   This process is mainly used for machines having microprocessor controlled addition system for dyeing medium to heavy shades. It is mainly recommended for dyeing shades greater than 0.5% on unmercerised cotton. Diagram not to scale   (6) Garment Dyeing   Garment dyeing plays major role since level dyeing is to be achieved at collars and cuffs since they are doubly stitched and hence dyes are likely to go more at that area. Rotary drum machines are usually used for dyeing followed by hydroextraction and tumble drying. HE dyes because of its excellent levelling properties can be used for garment dyeing. Small amount of lubricant before dyeing helps in avoiding crease mark and harshness to the fabric.   Salt and Alkali requirement table.   % Shade Salt (gll) for Unmercerised Cotton Salt g/l. For Mercerised Cotton Soda ash g/l. Mixed alkali Fixationtime (Mins) Soda ash Caustic Soda up to 0.1 10 5 5 Not Suitable 20 0.11 to 0.3 20 10 8 Not Suitable 30 0.3 to 0.5 30 20 10 5 0.2 30 0.51 to 1.00 50 35 15 7 0.2 45 1.01 to 2.00 60 45 18 10 0.2 45 2.01 to 4.00 70 55 20 10 0.5 60 Above 4.00 90 65 20 10 0.5 60-90   Back to Top General Jigger Dyeing Method     Load the goods on Jigger - 1 end   Set dyebath at room temperature with required water + 0.5 -1 g/l Camasequest N -     Add the half dye solution and run the fabric - 1 end   Add remaining halt dye solution and run the fabric - 1 end   Start raising the temperature and add half amount of salt and run the fabric - 1 end   Add remaining half amount of salt and run the fabric - 1 end   At 80-85° C run the fabric - 2 ends   Add soda at 80° C 1/2 the amount - 1 end   Add remaing half amount of soda and run the fabric - 1 end   At 80-85° C run the fabric - 4 ends   Cold wash - 2 ends   Hot wash - 2 ends   Soaping at boil - 2 ends   Hot Wash - 2 ends   Cold Wash - 2 ends   TOTAL - 23 ends   In case of dark shades salt can be added portion wise, as per Method No. 1   General Washing Method   In order to achieve maximum fastness properties a proper wash off is essential for the dyed and printed goods.   Minutes   10 Rinse Cold 10 Rinse Warm 15-30 Soap at the boil. For Very heavy depth shades soaping required twice. 10 Rinse Warm   Rinse Cold until clear solution is obtained.   For Medium to heavy shades an after treatment with 1 - 2 g/l dye fixing agent is given at room temperature (40°C at acidic pH of 5 - 5.5 to improve fastness properties.)       L. YELLOW HE4G Reactive Yellow 81     YELOW HE4R Reactive Yellow 84     G. YELLOW HER Reactive Yellow 84A     YELOW HE6G Reactive Yellow 135     ORANGE HER Reactive Orange 84     ORANGE HE2R Reactive Orange 94     RED HE3B Reactive Red 120     RED HE7B Reactive Red 141     RED HE8B Reactive Red 152     BLUE HERD Reactive Blue 160     NAVY BLUE HER Reactive Blue 171     NAVY BLUE HE2R Reactive Blue 172     BLUE HEGN REACTIVE BLUE 198     NAVY BLUE HEXR Reactive Blue     GREEN HE4BD Reactive Green 19     BLACK HEBL Reactive Black 160 Back to Top