EVERCION P & PRINTING TECHNICAL INFORMATION

Transcription

1 EVERCION P & PRINTING TECHNICAL INFORMATION

2 PRINTING Laboratory Sample Lab Printing Dye Kitchen Designing Mold (Şablon) Department Planning Printing Printing Machine

3 Evercion P Evercion P reactive dyes are designed for cellulose silk printing, giving prints with excellent fastness and brightness. What is our advantages? Brilliant with full color range Easy to dissolve with high solubility Free form insoluble particle Dust free Good quality with consistency Easy wash-off and free from cross staining

4 Evercion P Low urea request for most of products Excellent paste stability Very good reproducibility Meet standard fastness requirement Good for versatile printing and dyeing application Liquid range available for auto dispensing Lower Reactivity provides: outstanding stability in the printing paste Lower Substantivity provides : no risk of staining and good washing off properties

5 Evercion P dyes are a future-oriented physical formulation as regards: productivity quality industrial hygiene environmental safety

6 Evercion P Dye Range

7 General Process for Cellulose/Silk printing Fabric pretreatment Paste prepare Printing Drying Steaming fixation Washing off Drying

8 The Best Process Flowchart Fabric Pre-setting ( C) Pretreatmentt Drying ( C) Continious Tumpler Finishing (Unshrinkability) Sanforizing Printing Steaming Washing Drying Sanforizing Havy Fabrics with EL: CPB Bleaching Knitted Fabrics with EL: Exhaust Bleaching OWA (If needed) Continious+ Jet for knittted fabrics Only HT washing can be problem like; crease mark, pilling and staining problem

9 Fabric Pretreatment The fabric should be pretreated with thoroughly de-sized to obtain good adsorption. It should also leave the fabric in a neutral or slightly alkaline conditions. Lycra: has an important role in dimensional stability gains levelness to the fabric Yarn quality: Compact Ring If you have pilling or levelness problem, It may derieve from yarn type Karde Openend Penye Yarn and Fabric Quality Vortex

10 Thickener Because o the reactive nature of Evercion P dyes thickeners containing free hydroxyl groups cannot be used. Thickeners base on; Sodium alginate and its mixture Synthetic thickener Should we use wetting agent? Printing should be done on dry fabric. Wetting agent may cause penetration problem. When it is used and then the fabric dried before printing, the wetting agent molecule may stuck between fibers and it cause low penetration so; it is recommended not to use, but it could be add in PAD mixture. Seaweed Which thickeners should we use? Low viscosity type alginate is the best option for penetration. Mixing with synthetic thickener will reduce fluidity and penetration

11 Thickener Alginates; Low viscosity Medium Viscosity High Viscosity Low viscosity alginates; % Solid is high Natural Good levelness It is important for a thickener; Color efficiency; a thickener shouldn t react with dye. But expensive so; Thickeners medium viscosity alginants are used generally mix with synthethic thickeners. Sample Thickener; Medium viscosity alginates 25g/kg Synthetic Thickener 10g/kg A synthethic thickener doesn t like electrolytes; An addition of electrolytes in Washing bath, it can be reduce its effect and removed from more easily.

12 Application Recipe Stock Paste : Thickener X Alkali g/kg Urea g/kg Reduction İnb. 10 g/kg Dyes y Penetration Agent 5 Soft Water Z Water: Soft water should be used. Alkali: Sodium bicarbonate or a mixture with sodium carbonate Urea: It depends on the material and fixation way Ex: Urea amount should be increase when viscose printing and fixation under H-T steaming. Printing and drying: Fabric should be pre-set and fed into printing machine with proper tension so as to keep the prints maintain original design. Fixation: The printed fabric are fixed by saturated steaming for 6-12 minutes at 102 C

13 Printing and drying Machine Parameters Screen selection The most important factor open area Higher open area let us get higher penetration Blade squeegee The highest range: mm We suggest: 55 mm blade Magnet Rod The diameter range: 6-80 mm 35, 40 or 50 mm could be proper Speed of printing machine The most important factor open area Higher open area let us get higher penetration Speed changes with other dyeing parameters (fabric, dye, penetration deep etc.)

14 Printing machines With Knife With Magnetic Knife inside Can be problem with side to side problem Better result listing Better penetration Better result with thin designs Magnetic Rod If the pressure is too high it may deform and damage rotary screen Good performance specially for women dress

15 Printing and drying Machine Parameters Mesh The number of holes (25-195) in 1 inch. The most useable MESH is 125 (Hole Per Inch). The thinner pattern requires the more hole number.

16 Steaming The fabrics should be dryed smoothly. The fabrics shouldn t touch each other to improve stamping problems. Saturated Steaming 6-12 minutes at 102 C

17 Washing After fixation not only thickener and auxiliaries, but also the unfixed dye should be removed. Careful attention should be given during each rising process so as not to generate cross staining. Conventional Washing Cold Wash Warm wash Hot wash Soaping Hot rinse Warm rinse Cold rinse

18 Washing The higher the temperature the better the soaping effect.

19 THANK YOU FOR LISTENING