Direct answer: a coating requirement must state the functional surface, viewing direction, coverage boundary, masked zones and adjacent processes. “Coated glass” alone does not tell a factory which side faces the user, whether printing or adhesive may overlap it, or how the finished part will be inspected.
Define the complete surface stack
Identify the glass face as viewed by the user, then list every layer from the user side to the rear: coating, print, clear window, adhesive, film and frame. Add a sectional drawing where possible. This prevents a reflective, anti-glare, conductive or easy-clean layer from being applied to the wrong side or hidden under an incompatible material.
| Item | Release question |
|---|---|
| Orientation | Which face is outward after assembly? |
| Boundary | Where does coating stop relative to edges, holes and windows? |
| Masking | Which areas must remain uncoated for printing or bonding? |
| Protection | Which film, separator and cleaner may touch the surface? |
| Acceptance | Which optical or functional property is evaluated, and how? |
Validate interfaces, not a coupon alone
Coating performance can change after printing, tempering, cleaning, bonding or handling. Factory testing should therefore use production-intent glass and the released sequence. Installation preparation should also confirm that frames, gaskets and clips do not rub or load a coated zone.
Use fixed lighting for appearance and define the measurement method for any reflection, haze, color, conductivity or cleanability claim. The functional-coatings guide and chemical-resistance guide help convert broad labels into testable requirements.
FAQ
Can a coating extend under a printed border?
Only after compatibility and appearance are verified on the intended layer order. Do not assume all inks or adhesives behave the same on a coated surface.
Is a protected sample enough for approval?
No. Confirm the final assembly orientation, optical appearance and handling conditions as well as the component sample.
Conclusion
Specify side, boundary, interfaces and acceptance method before sampling. That gives procurement a comparable quote and the production team a controlled route.
Send Tairong your stack drawing for a coating-orientation review.