How to Identify Genuine Aliphatic TPU PPF?
To distinguish the authenticity of aliphatic TPU PPF, the core lies in these four points: tensile rebound, fire test, scratch self-healing, and adhesive layer performance. Let me break it down for you:
1. Core identification method (rapid on-site judgment)
Stretch and rebound test: Cut a strip of sample and stretch it. Genuine TPU PPF film can stretch by more than 50% and quickly rebound to its original shape without breaking; while fake TPU/PVC will turn white, rebound slowly, or break after stretching.
Burning odor test: Ignite the sample. Real Aliphatic TPU PPF burns with a yellow flame, emitting an odor similar to alcohol or candles, and the ash is a viscous liquid; fake TPU/PVC produces black smoke and a pungent plastic odor when burned, and the ash is hard and brittle.
Scratch self-healing test: Scratch the surface lightly with a key. Minor scratches on genuine Aliphatic TPU PPF will gradually disappear under hot water or sunlight; scratches on fake TPU cannot be repaired.
Adhesive layer performance test: Peel off the adhesive paper. A good adhesive layer will not lose its adhesive strength after being adhered to a flat surface for more than 50 times; a poor adhesive layer will lose its adhesive strength after being adhered for just a few times.
2. Auxiliary identification method (comprehensive judgment)
Appearance and touch: Genuine TPU Paint protection film is transparent, translucent, or fluorescent blue, with a soft texture; while counterfeit TPU appears translucent, slightly yellowish, or milky white, and feels relatively hard.
Brand and Price: Choose reputable brands (such as NAR, Comliker ) and request a yellowing resistance test report (△E≤1). Be cautious if the price is too low.
3. Professional advice
Prioritize aliphatic TPU: Ensure that the product is clearly labeled as “aliphatic TPU” and avoid vague terms such as “TPH PPF” and “modified PVC”.
Request for test report: Request to provide third-party test reports on yellowing resistance, flame retardancy, etc.
Consult a professional: If you have any questions, send it to a professional institution for testing or consult an experienced film application master.
