What should be noted when using Flexible UV Ink?
Precautions for Using Flexible UV Ink:
I. Storage and Handling
1.Light Protection: UV ink cures upon exposure to ultraviolet light; store in a cool, dark place away from direct sunlight.
2.Temperature Control: Recommended storage temperature is 15-25°C. Avoid high temperatures (>30°C) or low temperatures (<5°C) to prevent changes in ink viscosity or separation.
3.Shelf Life Management: Use within 3-6 months after opening. Long-term standing may cause sedimentation; stir thoroughly before use.
II. Equipment Compatibility Requirements
1.Printhead Compatibility: Ensure the ink matches the printer printhead model (e.g., Ricoh G5/G6, Epson I3200). Incompatibility may cause nozzle clogging or damage.
2.UV Light Power: Sufficient energy is required for curing flexible ink. LED UV lamp power is recommended to be ≥20W/cm to ensure thorough curing and a non-tacky finish.
3.Ink Supply System: A supply system with circulation and filtration functions is recommended to prevent impurities from clogging the printhead.
III. Curing Parameter Settings
1.Curing Energy: Adjust UV irradiation energy based on material thickness. Too thin may result in insufficient curing, while too thick may cause substrate deformation.
2.Curing Distance: Maintain a distance of 5-10cm between the UV lamp and the print surface. Excessive proximity may scorch flexible materials.
3.Testing Verification: Conduct curing tests before mass production. Scratch with a fingernail to check for peeling, and wipe with a solvent to check chemical resistance.
IV. Printing Environment Control
1.Temperature and Humidity: Recommended environmental temperature is 20-28°C, with relative humidity of 40%-60%. Excessive humidity affects curing results.
2.Cleanliness: Keep the printing area dust-free. Dust adhesion affects ink smoothness and adhesion.
3.Ventilation: Although the ink is eco-friendly, maintain proper ventilation to avoid localized heat accumulation.
V. Maintenance and Care
1.Printhead Cleaning: Perform printhead cleaning if the machine is idle for more than 24 hours. Use a dedicated cleaning agent to prevent dried ink from clogging the nozzle.
2.Regular Maintenance: Check ink supply lines and filters weekly, and replace clogged components promptly.
3.Waste Ink Disposal: Dispose of cured waste ink as hazardous waste; do not pour it directly into drains.
VI. Safe Operation
1.Personal Protection: Wear gloves and goggles during operation to avoid direct contact with skin or eyes.
2.UV Protection: Avoid staring directly at UV light sources during curing to prevent eye and skin damage from UV rays.
3.Emergency Handling: If ink contacts skin, rinse immediately with plenty of water. If ink gets into eyes, seek medical attention immediately.
