PET Graphic Overlay Engineering: How to Select, Specify, and Procure Industrial-Grade Polyester Fascias for Global OEMs

We accept 1:1 scale vector files in Adobe Illustrator (.AI), vector .PDF, AutoCAD (.DXF, .DWG), or CorelDraw (.CDR). All fonts must be converted to outlines/curves. For color fidelity, we match against standardized Pantone Solid Coated (PMS) or RAL color systems using spectrophotometers under standard D65 daylight booths. If custom opaque plastic or aluminum housing swatches are supplied, our formulation lab executes custom ink pigment dispersion matching with ΔE < 1.0 color tolerances.

Adhesive selection is dictated by the mating enclosure’s surface energy and texture. 3M 467MP (0.05mm thick 200MP acrylic) is the baseline standard for smooth, flat, high surface energy (HSE) surfaces such as bare aluminum, stainless steel, and polycarbonate. For slightly textured cast metals or painted panels, 3M 468MP (0.13mm thick) fills microscopic surface peaks and valleys. When bonding to low surface energy (LSE) polymers—such as polypropylene, polyethylene, or powder-coated textured chassis—we specify 3M 300LSE (such as 3M 9472LE), which forms an aggressive mechanical and chemical bond without edge lifting.

We offer rim embossing (outlining the button perimeter), pillow/flat-top embossing (elevating the entire key surface), and custom domed or debossed geometries. The standard emboss height ranges from 0.3mm to 0.6mm, depending on film thickness (typically 0.15mm to 0.188mm PET). As an essential DFM rule, the embossing boundary must maintain a minimum 1.5mm to 2.0mm clearance from the outer die-cut perimeter and display window cutouts to avoid delamination and stress creasing.

We begin with an optically clear gloss polyester substrate (such as Autotype Autoflex or equivalent). Subsurface screen printing applies all opaque graphics and borders. A selective UV-curable texture varnish is then printed across the front surface everywhere except over the designated display zones. This leaves pristine optical windows for LCDs, OLEDs, or 7-segment LEDs with over 92% optical clarity, eliminating the need to die-cut separate acrylic window lenses.

To support high-velocity hardware engineering cycles, Dongguan Cevra Electronic Technology Co., Ltd. provides prototype runs starting from just 10 pieces utilizing digital laser cutting to eliminate initial steel die tooling costs. Turnaround for first engineering prototypes is typically 5 to 7 business days following artwork signoff. Mass production runs typically require 10 to 14 business days, complete with full inspection reports and certificate of conformance.

All substrates, UV-curable inks, conductive pastes, and pressure-sensitive transfer tapes utilized at Dongguan Cevra Electronic Technology Co., Ltd. are certified fully compliant with RoHS 3 (EU 2015/863), REACH (SVHC list), and UL94 flammability ratings. We routinely issue formal material test certificates and declarations of conformity with every production lot.