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1. Poor Adhesion (Easy to Peel Off)

• The fabric surface is not pre-treated (e.g., uncleaned or without coating treatment).

• The ink formula does not match the fiber type (e.g., not optimized for synthetic fibers).
  Solutions:

• Pre-treat the fabric: Clean to remove grease, sizing, or silicone residues, or apply a pretreatment agent (e.g., primer).

• Select specialized inks: For example, polyester inks should contain adhesion promoters (e.g., polyurethane resin).

• Enhance thermal curing: Use high-temperature drying (e.g., 130–150°C) after printing to promote bonding between ink and fibers.

2. Slow Drying Speed

• Poor water absorption of the fabric (e.g., chemical fibers) or high environmental humidity.

• Excessively thick ink layer (especially for dark or high-coverage inks).
  Solutions:

• Add drying equipment: Use infrared or hot air dryers to accelerate drying.

• Print with thin ink layers multiple times: Reduce the thickness of a single ink layer and stack colors in multiple passes.

• Add quick-drying additives: Use low-boiling-point solvents (subject to environmental compliance).

3. Poor Wash Resistance (Fading/Peeling After Washing)

• The ink is not fully cured or fails to form a flexible film.

• Strongly alkaline detergents or mechanical friction damage the ink layer.
  Solutions:

• Ensure full curing: Maintain the required drying temperature and time (e.g., 150°C for 3 minutes for polyester).

• Add cross-linking agents: Improve ink wash resistance (e.g., water-based polyurethane cross-linkers).

• Post-treatment process: Apply a transparent protective layer (e.g., water-based varnish) after printing.

4. Color Bleeding/Diffusion

• Loose fabric structure (e.g., knitted fabrics) or excessively high water absorption (e.g., cotton).

• Too low ink viscosity or excessive fluidity.
  Solutions:

• Increase ink viscosity: Add thickeners (e.g., cellulose-based) to control penetration.

• Use anti-bleeding paste: Apply anti-bleeding primer to the fabric before printing.

• Choose high-mesh screens: Reduce ink deposition (e.g., 120–160 mesh).

5. Handfeel Hardening

• Excessively high resin content in the ink or over-curing.

• Thick ink layer or multiple overprinting.
  Solutions:

• Use soft resin inks: Such as water-based acrylic or polyurethane systems.

• Control ink layer thickness: Reduce squeegee pressure or use low-mesh screens.

• Adjust curing conditions: Avoid excessively high temperatures that cause resin cross-linking.

6. Insufficient Opacity of White Ink

• Low titanium dioxide content or uneven dispersion.

• Too dark fabric fiber color .
  Solutions:

• Use high-opacity white ink: Titanium dioxide content should be ≥40%, or add opacity enhancers.

• Two-pass printing: First apply a gray undercoat, then cover with white ink.

• Choose thick-film screens: Such as 80–100 mesh to increase ink deposition.

7. Cracking on Elastic Fabrics

• Insufficient ink flexibility to withstand fabric stretching.

• Excessively high curing temperature causing resin brittleness.
  Solutions:

• Select elastic inks: Containing elastic polyurethane or silicone-modified resins.

• Low-temperature curing process: Such as slow drying below 120°C.

• Test elongation: Ink elongation should match the fabric (typically ≥100%).

8. Color Migration After Printing

• Incomplete ink curing or poor pigment stability.

• Moisture or pressure during fabric storage.
  Solutions:

• Ensure thorough drying: Stack fabrics only after the ink is fully cured.

• Use high-stability pigments: Such as surface-treated organic pigments.

• Add anti-sticking agents: Reduce adhesion between printed surfaces.

9. Environmental and Safety Issues

• Inks contain harmful substances like formaldehyde or APEO.

• Lack of environmental certifications .
  Solutions:

• Choose compliant inks: Ensure compliance with regulations like REACH and CPSIA.

• Thorough post-washing: Remove uncured residues.

• Testing and certification: Request environmental test reports from suppliers.

10. Misalignment in Multicolor Overprinting

• Fabric stretching or deformation (e.g., stretchable knitted fabrics).

• Insufficient screen tension or positioning system errors.
  Solutions:

• Pre-shrink treatment: Pre-shrink fabrics before printing.

• Use positioning fixtures: Fix fabric edges or adopt fully automatic positioning equipment.

• High-tension screens: Reduce screen deformation during printing.