Privacy EPU film: clear from the front, 28° optical privacy darkens from the side; self-healing with tough scratch buffering; full-adhesive lamination, in-display fingerprint unlock, fits all cutting machines.
WA37138HF
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Standard vs. measured values on every row — all tested per GB / ASTM methods.
| Parameter | Unit | Standard | Measured | Test Method |
|---|---|---|---|---|
| Total thickness | μm | 180±15 | 184 | Thickness gauge |
| Water contact angle | ° | ≥100 | 104 | GB/T 30447-2013 |
| Haze | % | ＜15 | 3.95 | ASTM D1003 |
| Light transmittance | % | ≥60 | 61.4 | ASTM D1003 |
| Self-healing | / | No scratch in 15s | OK | Copper brush |
| Cross-cut adhesion | B | ≥4B | 5B | GB 9286 |
| Blue-light blocking | % | / | / | Blue-light tester |
| Coefficient of friction | / | <0.3 | 0.22 | ASTM D1894 |
| Real-device edge-lift test | / | No edge lift on device | OK | S23U / 300U smartphones |
| Steel-plate adhesion | g | 400-900 | 500 | ASTM D3330 |
* Measured values are from HANGMO outbound QC reports; certificates available with shipment.
Clear from the front, dark from the side to protect privacy.
Built-in self-healing clears fine scratches on its own.
Tough, scratch-resistant and buffered; case-friendly.
Full-adhesive lamination; in-display fingerprint unlock; fits all cutting machines.
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