THE FUNCTION OF CMC IN THE TEXTILE INDUSTRY
CMC is an important auxiliary agent in textile printing, widely used in various printing processes due to its thickening, stabilizing, and water-retention properties.

IN DISPERSE PRINTING
Thickening Agent:

• Acts as a thickening component in the color paste to increase viscosity, ensuring uniform dye dispersion and preventing sedimentation.
• Adjusts the rheological properties of the printing paste, providing suitable pseudoplasticity (shear-thinning) for smooth screen or blade printing.

Stabilizer:

• Prevents the aggregation of disperse dyes in the color paste, maintaining system stability and avoiding speckles or color variations during printing.
• Reduces bleeding (color migration) during printing, enhancing pattern clarity.

Bonding Auxiliary:

• Improves the wettability and adhesion of the color paste on hydrophobic fibers (e.g., polyester), enhancing print fastness.

Moisture Retainer:

• Delays the drying of the color paste, ensuring sufficient dye penetration into fibers before thermofixation.

IN REACTIVE PRINTING
Primary Paste Component:

• CMC-Na is a commonly used paste for reactive dyes due to its excellent compatibility and easy wash-off properties.

Humectant:

• Delays the drying of color paste, ensuring sufficient dye diffusion and fixation.

Anti-bleeding Agent:

• High-viscosity CMC reduces pattern blurring for sharper outlines.

IN DIGITAL PRINTING
Ink Thickener:

• Used in reactive/acid digital printing inks to modify rheological properties and prevent printhead clogging.

Humectant:

• Extends ink wetting time on fabrics to improve color yield.

Dispersion Stabilizer:

• Prevents dye aggregation and maintains ink stability.

NOTE: Specific spec can be recommended according to your detailed application