Printing on Glass and Non-Porous Surfaces
Printing on glass and non-porous materials—such as metals, ceramics, and glossy plastics—presents unique challenges due to their smooth, non-absorbent nature. For industries like food & beverage, cosmetics, electronics, and pharmaceuticals, achieving durable, legible codes on these surfaces is essential for traceability and compliance.
Common Non-Porous Surfaces
- Glass bottles (beverage, pharmaceuticals)
- Coated metals (cans, appliances, wires)
- Glossy plastic (caps, jars, panels)
- Ceramics (tiles, containers)
Recommended Technologies
🔷 CIJ (Continuous Inkjet)
- Most widely used for curved or fragile glass surfaces
- Uses solvent-based inks that bond quickly and resist moisture
- Supports micro-character fonts and variable printing speeds
🔷 Laser Marking (CO₂ or UV Laser)
- Ideal for permanent, ink-free coding
- High contrast, no consumables, tamper-proof
- Suitable for coated glass, clear bottles, or metal lids
- UV laser is better for transparent or heat-sensitive items
🔷 UV Inkjet (High-Resolution Piezo)
- Alternative to CIJ for logos, barcodes, and fine text
- UV ink cures instantly on non-absorbent surfaces
- Works well on smooth metals and plastic panels
Best Ink Choices
- ✅ MEK-based solvent inks for fast drying and strong adhesion
- ✅ Pigmented inks for contrast on dark or tinted glass
- ✅ UV-curable inks for decorative or graphic printing
- ✅ Thermochromic inks for temperature-sensitive indicators
Surface Preparation Tips
- Ensure surface is free of dust, oil, or condensation
- Use air knife or pre-drying if printing in cold or wet environments
- Test ink adhesion with a scratch or tape test
Common Applications
- Expiry dates on glass bottles (beer, juice, liquor)
- Batch codes on ampoules and vials
- Marking tempered glass panels or windows
- Logo branding on cosmetic jars or perfume bottles
FAQs
- Will ink peel off from glass after drying? No—if you use the correct solvent ink and surface is clean, the print is durable
- Can laser damage the product? Only if improperly configured—use UV laser for delicate materials
Conclusion
Non-porous substrates demand specialized technology and chemistry for durable and elegant code application. Whether you’re marking glass bottles, metal cans, or glossy plastic, CIJ, laser, and UV inkjet systems from Cheef provide reliable solutions tailored to your production needs. Contact us today at sales@cheef.cn for consultation and product recommendations.
