With the vigorous promotion of various automotive film brands, TPU substrate has almost become synonymous with high-end paint protection film. However, for ordinary car owners, the terms such as PVC, TPH, TPU and other paint film substrates on the market are as confusing as a mystery. Today, we will take you to explore and answer your questions!

01.Why does a good base material mean a good paint protection film?

The paint protection film consists of three parts: substrate, adhesive layer and coating.

The adhesion of the glue layer determines whether it will debond, stick to the car paint, or bubble, and it also has a certain impact on yellowing.

The coating determines the water repellency, corrosion resistance, stain resistance and durability of the paint film. A high-density coating can effectively prevent more external factors from invading the inner layer.

The substrate is the key factor that determines the core properties of the paint film, such as scratch resistance, friction resistance, and yellowing resistance.

Therefore, the competition in paint protection film is essentially a competition between the quality of substrates.

In short, if the full score of a paint protection film's anti-scratch ability is 10 points, then the substrate plays a role of at least 9 points, and the remaining 1 point is determined by the adhesive layer and coating.

02. Why is TPU substrate superior?

The first generation substrate: PVC

PVC is actually what we often call plastic. For example, the hard water pipes we are most exposed to are made of PVC. After being processed into paint protection film, it is still hard and brittle. The main advantages are good impact resistance and low price, but the appearance and adhesive layer are unavoidable problems. PVC car covers of poor quality may even damage the car paint. The service life generally ranges from a few months to one or two years, and it is easy to turn yellow.

Second generation substrate: TPH

TPH is actually an upgraded version of PVC. It feels much softer than PVC and is thinner, so it has better adhesion, but there will still be some color difference when it is applied to the car. Although its yellowing and brightness are better than PVC, after a long period of exposure to wind and sun, PVC's yellowing, irreparable and cracking problems gradually emerge.

The third generation substrate: TPU

The Chinese name of TPU is thermoplastic polyurethane elastomer. It has excellent characteristics such as high tension, high tensile force, toughness, and aging resistance. It is a mature environmentally friendly material. TPU has good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, weather resistance, etc. At the same time, it also has many excellent functions such as high waterproofness, moisture permeability, windproof, cold resistance, antibacterial, mildew resistance, warmth retention, UV resistance, energy release, etc.

Among them, the performance of polycaprolactone TPU material is the most outstanding, with outstanding comprehensive performance. It has excellent mechanical strength, oil resistance, chemical resistance, wear resistance and tear resistance, as well as good flexibility, excellent low-temperature performance, and no ester group that is easily hydrolyzed, and has good hydrolysis resistance. Because of this, it is often used in the field of medical artificial organs and blood vessels, and the price is relatively high, so the cost of making paint protection film will also be higher.

Aliphatic TPU has higher brightness, good elasticity and stability, and basically does not change color or turn yellow under ultraviolet light.

03. Why choose Motec paint protection film(PPF)?

Motec paint protection film uses aliphatic TPU substrate, which has excellent mechanical strength, oil resistance, chemical resistance, wear resistance and tear resistance, and has excellent comprehensive performance! The special process makes the coating and TPU substrate integrated, so the Motec paint protection film coating is more durable, and the protection of car paint is naturally stronger and more durable!