Textile Grade CMC is a critical auxiliary in textile manufacturing, acting as a sizing agent, dye thickener, and film-forming agent.
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It improves yarn strength, enhances dye uniformity, and enables easy desizing (removal of sizing agents post-weaving)—making it suitable for natural fibers (cotton, linen), synthetic fibers (polyester, nylon), and blends. Its water solubility and biodegradability align with sustainable textile production practices.
Parameter | Specification |
Appearance | White powder |
Viscosity (2% solution, 25°C) | 300–1200 mPa·s |
Degree of Substitution (DS) | ≥0.85 |
Purity | ≥90% |
pH Value (1% solution) | 6.5–7.5 |
Moisture Content | ≤7% |
Efficient Sizing Performance: Increases yarn breaking strength by 15–25% and reduces yarn hairiness during weaving, minimizing loom downtime.
Uniform Dye Thickening: Provides consistent viscosity in printing pastes, ensuring sharp pattern definition and even color absorption.
Easy Desizing: Dissolves completely in hot water (60–80°C), leaving no residue that could affect fabric feel, breathability, or subsequent finishing.
Broad Fiber Compatibility: Adheres effectively to both natural and synthetic fibers, eliminating the need for multiple sizing agents.
Warp Sizing: Applied to yarns before weaving to improve abrasion resistance and reduce yarn breakage.
Textile Printing: Used as a thickener in reactive, disperse, and direct dye formulations for garment and fabric printing.
Fabric Finishing: Enhances fabric stiffness and crease resistance in garment processing, improving shape retention.
Q: What viscosity grade of Textile Grade CMC is recommended for cotton fabric printing?
A: Medium viscosity grades (800–1200 mPa·s) work best, as they ensure sharp print details while maintaining paste flowability.
Q: Does Textile Grade CMC affect the breathability of finished fabrics?
A: No—its complete removal during desizing preserves fabric porosity and breathability, even for lightweight or delicate fabrics.
Key Applications in Textile Manufacturing
1. Warp Sizing Agent
• Strengthens Yarns: Forms a protective film on warp yarns, reducing breakage during weaving.
• Easy Removal: Washes off completely during desizing without residue, ensuring smooth fabric finishing.
• Improved Weaving Efficiency: Reduces friction and static, enhancing loom productivity.
2. Printing Thickener (Replacing Alginate)
• Vibrant, Precise Prints:
High DS (≥1.3) ensures electrolyte resistance (pH 3–12), preventing dye migration. Provides uniform viscosity for dye pastes enhances color sharpness and pattern clarity on cotton, silk, and synthetics.
• Precise Print Definition: High Color Yield: Minimizes dye migration, improving pattern clarity on cotton, polyester, and blends.
• Superior Rheology:
High structural viscosity (PVI <0.5 vs. alginate’s 0.8) enables fine-detail printing for intricate designs.
• Cost & Performance Edge:
30% higher paste yield than alginate, reducing usage. Compatible with digital and screen printing.
• Eco-Friendly: Replaces synthetic thickeners, reducing environmental impact.
2. Fabric Finishing
• Softening & Anti-Static: Enhances fabric hand feel and reduces static buildup.
• Dimensional Stability: Helps control shrinkage in natural and synthetic fabrics.
4. Dyeing Assistant
• Level Dyeing: Promotes even dye absorption, preventing patchiness.
• Reduced Dye Waste: Improves dye fixation, lowering water and chemical consumption.
