A paper-like feel for writing on screen: no slipping, no tip wear. Effectively filters blue light to reduce eye strain and potential harm, with anti-reflection and no glare. Low-tack silicone full-cover adhesive — easy to apply and adjust. For tablets and laptops.
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A 60±5μm PET liner over the use layer: it protects the functional coating from scratches and dust during shipping and storage — just peel it off before application.
The paper-like coating restores a real paper feel: no slipping, no tip wear, smooth strokes — while effectively filtering blue light to reduce eye strain and potential harm. Anti-reflection with no glare; 2H scratch-resistant surface survives 500g/cm² ×50 abrasion passes without damage.
The PET base and silicone adhesive form the 160±20μm use layer: low-tack (1-3g) full-cover adhesion that is easy to apply and adjust without bubbles. 92.5% transmittance keeps the display crisp, 16.8% haze softens reflections, with a hydrophobic surface (105° contact angle).
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Standard vs. measured values on every row — test reports available with shipment.
| Parameter | Unit | Standard | Measured | Test Method |
|---|---|---|---|---|
| Use-layer thickness | μm | 160±20 | 158 | ASTM D374 |
| Water contact angle | ° | ≥80 | 105 | GB/T 30447-2013 |
| Transmittance | % | ≥90 | 92.5 | ASTM D1003 |
| Haze | % | ≤25 | 16.8 | ASTM D1003 |
| Blue-light blocking | % | 410nm blocking | 21.3 | Blue-light tester |
| Use-layer tack | g | 1-3 | 1.62 | Tension/compression tester |
| Pencil hardness | H | 500gf load | 2 | Pencil hardness tester |
| Abrasion | g/inch | 500g/cm² ×50 passes | No scratch | Alcohol/rubber abrasion tester |
* Measured values are from HANGMO outbound QC reports; certificates available with shipment.
Writing on screen feels like writing on paper — natural strokes, no slipping, no tip wear.
Effectively filters blue light (21.3% @410nm), reducing eye strain and potential harm.
Prevents screen reflections from causing glare — comfortable for long writing sessions.
Use-layer tack of just 1-3g: silicone full-cover adhesion that is easy to apply and adjust, bubble-free.
Send us your model list and quantity — factory direct, reply within 48 hours.
Contact Us for a QuoteBoth films are full-cover low-tack silicone: the whole surface adheres, nothing is left on the screen when it comes off, and both can be lifted and repositioned during application. Measured use-layer tack is 1.62 g on both, inside the 1–3 g standard window — so the adhesive is not what separates them.
What separates them is the optical layer. One is built to cut blue light and give a stylus something to grip; the other is built to remove reflections and let the panel's own light through almost untouched.
| Specification | Blue-Light Writing | AR Anti-Reflection |
|---|---|---|
| Specified for | Tablets and laptops, stylus work | Flat-screen phones and laptops |
| Use-layer thickness | 160±20 µm · 158 measured | 160±10 µm · 161 measured |
| Transmittance | 92.5% · standard ≥90 | 95.9% · standard ≥93 |
| Visual reflectance (Y) | Not specified — glare handled by haze | 0.4% · standard ≤0.5 |
| Haze | 16.8% · standard ≤25 | 0.28% · standard ≤1 |
| Blue-light blocking | 21.3% · @410 nm | Not specified |
| Pencil hardness (500 gf) | 2H | 3H |
| Use-layer tack | 1.62 g · standard 1–3 | 1.62 g · standard 1–3 |
| Water contact angle | 105° · standard ≥80 | 106° · standard ≥90 |
| Abrasion (500 g/cm²) | No scratch · 50 passes | No scratch · 50 passes |
All values from HANGMO outbound QC reports. Thickness ASTM D374 · transmittance and haze ASTM D1003 · reflectance by Olympus reflectometer · water contact angle GB/T 30447-2013 · tack by tension/compression tester · abrasion 500 g/cm².
When a buyer says the screen looks washed out under office lighting, reflectance is the cause and 0.4% is the fix. The 0.28% haze means the image stays sharp rather than diffused — that is the practical difference between this film and the writing film beside it, and it is a difference a buyer can see in one glance at a window.
The haze is what gives a stylus grip, and the film pairs it with a 21.3% cut at 410 nm. Compare it against other writing films, not against AR: a buyer who wanted clarity should be quoted the other column. At 2H it is also the softer of the two surfaces, which matches a film meant to be written on rather than wiped.
Send us the complaint in their words — “washed out”, “too much glare”, “can't write on it” — and we will tell you which film it maps to, with the QC sheet to back it.
No. Full-cover film is low-tack silicone and goes on by hand. Curing equipment is required only for the UV family, which is a different material and a different process. Nothing in this series needs a lamp, a vacuum press or any tooling on the buyer's side.
It is the share of ambient light the surface throws back at the viewer. At 0.4% (standard ≤0.5) reflections stop washing the image out under office or window lighting. The same film also measures 95.9% transmittance and 0.28% haze, so the anti-reflection is not paid for with a dimmer or softer image.
Yes. Both films in this series use the same low-tack silicone, measured at 1.62 g inside the 1–3 g standard window. Full-surface adhesion with a low-tack window is what makes repositioning possible during application — the film holds, but it can still be lifted to chase out a bubble or a speck of dust.
The blue-light writing film. Its 16.8% haze gives the tip grip and it cuts 21.3% at 410 nm; at 2H it is also the softer of the two surfaces, which suits a film that is meant to be written on rather than wiped. The AR film is a viewing film — quote it when the complaint is glare, not handwriting.
No, it is the product. Haze measures 16.8% against a standard of ≤25, and that haze is what creates the paper feel. Judge it against other writing films; against the AR film (0.28%) it will always look cloudy, and a buyer who asks for clarity should be quoted the AR column instead.