Hydrophobic TPU Color Wrap Film is a 7.5 mil aliphatic polyurethane color-change film engineered for vehicles that live outdoors. It pairs four functions in one roll: a heat-activated self-healing surface, impact absorption against stone chips, UV and yellowing resistance built into the polymer chain, and a hydrophobic top coat that sheds water and resists staining from everyday contaminants. For wrap studios and distributors, that combination removes the usual compromise between a styling film that fades and a protection film that still needs constant cleaning.

This page states how each function is achieved, the measured values behind it, the installation and maintenance practice that keeps the performance inside warranty, and where the warranty boundary sits. Typical values are labelled as typical, and batch-specific test reports can be requested before shipment.

The film is a four-layer construction: a hydrophobic colored top coat, an aliphatic TPU core, a repositionable acrylic adhesive with air release channels, and a 1.5 mil PET liner. Each function maps to a specific layer rather than to a post-treatment sprayed on afterwards.

Self-healing comes from the crosslinked top coat. Above roughly 40 degrees C, polymer chain mobility lets shallow scratches close instead of staying open as a visible white line. Because the mechanism is structural, it survives repeated washing cycles rather than being consumed like a wax or a coating spray. Impact resistance comes from the elastomer core, which deforms and recovers instead of transferring stone-chip energy into the paint. UV resistance comes from choosing an aliphatic isocyanate backbone; aromatic TPU is inexpensive but absorbs UV energy and degrades into yellowing, which is why cheap color films look tired after one or two summers. Hydrophobic and stain resistance come from a low-surface-energy top coat: water beads and rolls off, and contaminants such as bird droppings, tree sap, road tar and coffee sit on the surface long enough to be wiped away instead of etching into it.

The fourth function is the one most buyers underestimate. On an unprotected colored surface, a single bird dropping left in the sun can leave a permanent mark within a day. A hydrophobic surface buys the owner time, and that difference is what separates a film that still looks new at year three from one that needs replacement.

• Self-healing surface: Wash-brush marks, fingernail scuffs and light road-dust scratches close within about 30 seconds once the surface reaches roughly 40 degrees C from sunlight, warm water or a heat gun. Repeatable over the service life, not a one-time effect.
• Impact resistance: The TPU core absorbs stone chips and light parking contact on bumpers, hoods and door edges, spreading the load through the elastomer instead of into the paint beneath.
• UV and yellowing resistance: Aliphatic polymer chemistry plus a UV-stabilised top coat keep light colors such as Pearl White and Iced Plum Pink visually consistent through years of vertical outdoor exposure, verified by accelerated weathering rather than by a claim alone.
• Hydrophobic performance: Water contact angle above 105 degrees typical, so rain and wash water bead and run off, reducing water spotting and mineral deposits on horizontal panels.
• Stain resistance: Coffee, cola, bird droppings, tree sap, insect residue, road tar and diesel splash wipe off with pH-neutral shampoo when removed within a reasonable window, without polishing or solvent.
• High gloss color depth: The clear top coat measures above 90 gloss units at 60 degrees, so metallic and pearl pigments read with strong distinctness of image rather than a flat, plastic look.
• Installer-friendly handling: Air release channels vent trapped air under the squeegee, and the repositionable adhesive allows lifting and re-laying on curves and mirror caps.
• Clean removal: Within the warranty period the adhesive releases from OEM paint without residue, protecting resale value for leasing and fleet customers.

Values marked typical are representative production figures, not minimum guaranteed limits on every roll. Contact angle and weathering reports can be supplied per batch on request.

Our application support work with wrap studios points to three factors that decide long-term performance. Keep the bay between 20 and 30 degrees C; below 15 degrees C the adhesive loses tack and the film stiffens on compound curves. Use a felt-edge squeegee at roughly 45 degrees with overlapping passes so air release channels vent before the adhesive wets out. Post-heat every edge and recess to 60 to 70 degrees C and hold briefly; edges that are pressed but not heated lift within a season.

Hydrophobic surfaces need different aftercare from ordinary film. Wash with pH-neutral shampoo and a soft mitt, rinse with clean water and dry with a microfibre towel; this preserves the low-surface-energy top coat and keeps water spotting away. Avoid automated brush washes with worn bristles, abrasive polishes and strong alkaline degreasers, all of which cut through the hydrophobic layer and dull the gloss long before the film itself fails. Contaminants such as bird droppings or tree sap should be removed as soon as practical, ideally within 24 hours, because the hydrophobic layer buys time but is not a permanent barrier.

Production runs under ISO 9001 process control, and material is tested against REACH, RoHS and FDA requirements, so European and North American importers receive documentation suitable for customs clearance and retail compliance review. Each carton carries a batch code linking back to the coating run, the color batch and the retained sample, allowing a claim to be traced to a specific production window instead of being handled as an anonymous roll.

Documentation available on request includes batch certificate of analysis, material safety data sheet, REACH and RoHS declarations, contact angle and weathering reports, and the warranty certificate template issued to the end customer. The company holds TPU invention patents and independent intellectual property in its core material technology, and serves more than 30,000 customers with 60 to 70 percent of output exported.

This film suits daily-driven cars, SUVs and pickups parked outdoors, coastal markets where salt and humidity accelerate surface degradation, and hot climates with intense UV loads. It is specified for full-body color change as well as partial work on hoods, roofs, mirror caps, pillars and bumpers. Fleet operators value the stain resistance because corporate-colored vans stay presentable with routine washing, and leasing companies value the clean removal that protects the original paint at end of term.

Studios also use it as an upsell over standard color vinyl: instead of explaining what paint protection is, the installer can demonstrate water beading on a sample panel, which is an argument the customer can see in ten seconds.

The warranty covers delamination, blistering, cracking, and yellowing or color shift beyond an agreed threshold for five years of vertical outdoor exposure, provided the film is installed by a trained applicator following the published guidance and maintained with pH-neutral products. It does not cover collision or abrasion damage, automated brush washes with worn bristles, abrasive polishing, strong solvent or alkaline cleaners, or removal and reinstallation of the same piece of film. Written terms ship with every order so the boundary is known before the sale.

Rolls are wound on a hard paper core, wrapped in PE film and packed in export cartons with pallet loading for container shipment. Minimum order is one roll, volume pricing from US$98 to US$115 per roll depending on color and thickness, standard delivery 7 to 15 days after deposit. OEM private-label printing on liner and carton is available, and technical support covers installation temperature, squeegee technique, post-heating, hydrophobic aftercare and stain removal practice.

This description was prepared by the KOSA technical sales team from production specifications, weathering records and installation support cases, and last reviewed in October 2026. Performance figures are stated with their test basis so buyers can compare them against their own requirements. For batch reports, color swatches or application questions, contact our technical sales team and quote the product name together with the batch code printed on the carton.