Nano-silica coating technology / TPU PPF
Nano-silica surface protection for TPU PPF
A nano-silica topcoat protects the surface of TPU paint protection film. The coating supports a smooth finish, helps limit staining and makes routine care easier.
Coating and film layers
Nano-silica coating architecture
The nano-silica coating works with the TPU film and pressure-sensitive adhesive. Each layer has a distinct role in the surface finish, flexibility and installation of the film.
Silica-based coating network
The silica-based network forms the outer surface that is exposed to cleaning and everyday wear.
Surface protection for daily use
Microsmooth transition layer
The transition layer helps create an even surface for a consistent finish.
Even surface appearance
Coating–polyurethane interface
The interface joins the coating to the flexible TPU film.
Bond between coating and substrate
Aliphatic TPU substrate
Flexible TPU lets the film follow vehicle panel contours.
Flexibility for curved panels
Pressure-sensitive adhesive layer
A pressure-sensitive adhesive bonds the film to the prepared paint under squeegee pressure.
Film positioning and adhesion
PET release liner
The PET liner protects the adhesive until the film is ready to install.
Protection during transport, storage and preparation.Four performance areas
How the topcoat protects the film
Choose the film by the surface protection, appearance and maintenance needs of your application.
Resistance to everyday wear
The topcoat helps protect the film from light abrasion during normal cleaning and use.
Surface smoothness and optical gloss
A smooth surface helps produce an even appearance. Compare gloss measurements for the same finish.
UV transmission
UV transmission is measured on the finished film over a defined wavelength range.
Resistance to surface contamination
The topcoat helps limit staining from road tar, sap and bird droppings. Remove contamination promptly as part of regular care.
FINISHED-FILM TESTS
Film selection and testing
Compare finished films using the same specimen preparation, method and conditions.
| Test item | Measurement | Comparison conditions |
|---|---|---|
| Surface hardness | Pencil hardness | Same substrate and test method |
| Water contact angle | Water droplet on the film surface | Same surface preparation |
| UV shielding | UV transmission over a defined wavelength range | Same wavelength range and specimen |
| Stain resistance | Surface after controlled exposure | Same contaminant and contact time |
| Peel adhesion | 180° peel force | Same substrate, dwell time and peel rate |
OEM PROJECTS
Discuss a nano-silica route for transparent TPU PPF
Share your target market, film thickness, finish and test priorities. We can discuss the coating, TPU, adhesive, roll dimensions and packaging for your project.
Discuss your project ↗