Where every defect is visible
Display film coating operates under a unique standard: the end user looks directly at the product. A thickness variation produces a visible color shift. A trapped particle creates a bright point defect. A streak pattern becomes obvious when the display is illuminated.
The challenge is achieving target coat weight with surface quality free of visible defects across the full area of every coated sheet or roll.
Coating methods
Slot die for anti-reflection coatings, hard coats, adhesives, and barrier films. The steady-state coating bead is essential for optical-quality surfaces. Gravure for thinner coatings at higher speeds.
Defect-free processing
Enclosed stations, HEPA air throughout, sealed web paths, smooth non-shedding surfaces. Inline defect inspection with real-time mapping and process parameter correlation.
Drying for optical quality
Low-velocity initial zones prevent convection-induced surface patterns. Multi-zone independent control prevents visible color banding. UV curing available with controlled exposure.
Web handling
Idler rolls with controlled surface finishes to prevent marking on clear substrates. Closed-loop tension and precision web guiding.