Difference Between Yarn-Dyed and Printed Fabric: Process and Procurement
Core Process Difference: Pre-Dyed Yarns vs. Post-Dyed Fabric
Yarn-dyed fabric is produced by first dyeing the yarns, then weaving them into patterns like plaids and stripes. The dye penetrates the fiber core, ensuring high colorfastness. Printed fabric starts with greige fabric, which is then printed via screen, transfer, or digital methods. The color sits on the surface, leading to faster fading. For products requiring over 5 washes without fading, choose yarn-dyed. For cost-sensitive projects with complex patterns, printed fabric is suitable.
Colorfastness and Cost: Key Parameters
Yarn-dyed fabric typically achieves colorfastness of 4-5 on the GB/T 3920 scale, while printed fabric reaches 3-4. Lightfastness: yarn-dyed can reach 6-7, printed 4-5. Cost-wise, yarn-dyed is 30-50% higher due to complex dyeing and inventory risk. Printed fabric is cheaper but pay attention to dye type: reactive dye offers moderate fastness (3-4), pigment dye is lowest (2-3) and stiffer. Always request test reports for washing and rubbing fastness.
How to Choose by Application: Plaids vs. Multi-Color Patterns
Yarn-dyed is ideal for classic patterns like plaids, stripes, and houndstooth. The pattern appears on both sides, making it perfect for shirts, suits, and home textiles needing symmetry. Printed fabric excels in complex, multi-color, or gradient patterns like florals and digital prints, but the pattern is only on the face. If the product requires reversible use or high wash resistance (e.g., workwear), go yarn-dyed. For fast fashion with low cost, printed is better. Note: printed fabric may show white base on dark backgrounds; confirm with samples.
Procurement Pitfalls: Shrinkage and Color Variation
Yarn-dyed fabric typically has shrinkage under 3% due to pre-dyed yarn stabilization; printed fabric can shrink 5-8%, especially cotton. Request pre-shrinking or add 5% allowance. Color variation in yarn-dyed comes from yarn lot differences; ensure same batch. Printed fabric variation occurs from misregistration or dye lot differences. Request A4 samples and compare under D65 light. Also, printed fabric older than 6 months may yellow; check packaging.
Procurement Checklist
- Confirm colorfastness: request ISO or GB test reports; washing fastness ≥4, rubbing fastness ≥3-4.
- Test shrinkage: cut 50cm×50cm sample, wash per home cycle; keep shrinkage under 3%.
- Compare costs: yarn-dyed has higher unit cost but lower waste; printed has lower unit cost but 3-5% defect rate.
- Check color consistency: use spectrophotometer; ΔE≤1.0.
- Match use: reversible or high-wash items choose yarn-dyed; single-side fashion or low-cost items choose printed.
- Keep retain samples: 30cm×30cm per batch for traceability.