How Is Window Tint Made?

How Is Window Tint Made?

Tinting car windows, office windows, and home windows has now become very important for many people. And you’d think that it’s because of aesthetics, but this isn’t the main reason. So what makes window tinting popular?

Well, that’s because it saves energy and ultimately money too. The truth is the climate will always change, and there’s nothing we can do about that. However, individuals will take any chance they get to reduce their expenditure and save money.

With many people developing an interest in window tint film, many customers want to learn how it is made and how it works. It’s why we’ve written this informative guide to help you answer this question. Let’s get started.

How Is Reflective Window Tint Made?

The market is full of many types of window tints. However, most of them are made of polyethylene terephthalate or PET, as it gives excellent optical clarity and strength. There are three main phases of creating a window film. Let’s go through each of them;

Phase 1: Creating the Window Film

PET pellets are partially melted to become semi-liquid. Then, the material is pulled lengthwise and widthwise into polyester sheets. After, manufacturers add chemicals and other materials to help block UV light.

Phase 2: Adding Metal and Dye into the Film

The next step involves adding dye or metal into the polyester sheet. But, whether the manufacturer adds dye or metal will depend on the type of film they want to create, its function, and quality.

Dyed window films are mostly used in automotive tinting. Since dyes are heat absorbent, it allows the vehicle to remain cool inside even when the weather is hot outside. On the other hand, metal films reflect heat rather than absorb it. As such, they are suitable for flat windows in homes and offices.

The process of dying and metalizing sheets is quite interesting. When dyeing, manufacturers coat the dye into the polyester sheet then cure it in an oven. The oven heat will then bind the dye pigments into the sheet so that the color sticks and will never wash off.

Metalizing polyester sheets happens in three different ways;

  • The first way is evaporative cooling. This involves heating metal in very high temperatures in a crucible, which forces it to melt, thus forming a glass cloud. Once that happens, the film and the glass cloud are bonded as they cool. Most manufacturers usually use aluminum metal for this process as it has a low melting point.
  • The second method is called electron beam coating. Here, the metal is exposed to a beam of high-energy electrons, which heat and melts it up. Then, it is bonded to the film like in evaporative cooling.
  • The third way is sputtering, which focuses the metal on electrically charged gas. This frees the metal’s molecules, which are pitched on the film using a side-by-side pattern. As a result, a thin and precise coating film is formed. However, because of the high level of preciseness, water can sometimes be trapped in the film. But it will evaporate after a few weeks of curing.


After dyeing or metalizing the film, manufacturers will then apply a scratch-resistant layer on the side of the film, which will face the interior of the window. The layer protects the window film from scratching or scraping. As such, your window tint can last for years without any scratches.


The final step involves applying an industrial-strength adhesive to the film. This ensures durability and prevents peeling as well as bubbles from foaming. Manufactures will mostly use sticky adhesive for a car window film and clear dry adhesive on office or home window tint films.


If you want to know how to tint car windows or want help with house window tint or office tinting, we are here for you. We offer the best Alamo window tint for home services with customer satisfaction in mind. Call us today for professional and affordable window tint.