Disperse dye printing Thickener/paste is mainly composed of natural polymer substances, suitable for polyester knitted and woven fabrics with disperse dye printing, the paste as the carrier of the printing dye paste plays a key role in the printing effect. This product has a high colour yield and can be used to print polyester fibres with a soft hand and clear pattern. It can be mixed with a small amount of disperse thickener to reduce costs.
| DS-101 | >10000,(5%) | Low amount, high clarity, good handfeel; suitable for fine and large-area printing |
Functions of Screen Printing Thickeners
- Viscosity: Provide the right thickness for controlled, precise printing.
- Adhesion: Help the dye or pigment adhere to the fabric.
- Film Formation: Ensure the design remains sharp during and after washing.
- Prevent Bleeding: Limit spreading of dyes or pigments.
Disperse dyes are a class of insoluble dyes primarily used for printing on synthetic fibers like polyester, acetate, and nylon. They are characterized by their ability to disperse in water and form a dye bath or paste, which adheres to the fibers through heat fixation.
Disperse Dyes Screen Printing
What Are Disperse Dyes?
- Insoluble in water: They are finely ground powders dispersed in water with the help of dispersing agents.
- Affinity: They have a high affinity for synthetic fibers, especially polyester.
- Color Range: Available in a wide range of vibrant colors and shades.
Screen Printing Process with Disperse Dyes
1. Fabric Preparation:
Clean and treat the fabric, typically polyester, to remove impurities and enhance dye fixation.
2. Preparation of Printing Paste:
- Disperse dyes are mixed with DS-101 thickeners (such as cellulose derivatives or gums).
- Dispersing agents and surfactants may be added to maintain uniform dispersion.
- The paste should have the right viscosity for printing (similar to reactive dyes but often more viscous).
3. Screen Printing:
- The paste is applied via screen or roller printing methods to the fabric.
- Precise control over the application ensures clear, sharp designs.
4. Fixation (Heat Thermofixation):
- The printed fabric is subjected to heat in a heat press or oven, typically at 180–220°C.
- The high temperature causes the dye to sublime and fix onto the fibers through physical adhesion and diffusion.
5. Washing:
- A subsequent wash removes unfixed dye, leaving vibrant, wash-fast prints.
Advantages of Disperse Dyes Printing
- Vibrant Colors: Exceptional brightness and color depth.
- Fastness Properties: Good wash, light, and rubbing fastness when properly fixed.
- Excellent for Polyester: The primary dye used in polyester printing.
Disperse Dyes Screen Printing Paste Components
- Disperse dyes powder
- Thickener (cellulose derivatives or gums)
- Dispersing agents
- Surfactants
- Water
