knowing aspects of window film - polyester window film
Window film is self
Adhesive materials that can be applied to new or existing glass windows to solve some problems.
Solar Control, privacy, decor & counter
Crush movies have been around for many years, like
Smog movies are also widely used in today's market.
In the simplest form, the window film is a thin sheet made of polyester, adhesive, and then a thin polyester liner.
Additional polyester films can be found on many films, two of which are called two-
In addition, three layers of safety and security film can be provided.
Sometimes metal or dyed layers can be added between these polyester sheets to increase color or tone, and scratch-resistant coatings can be found on most films to prevent daily wear.
Most types of glass windows can be fitted with window film, they can all be installed on flat glass, but depending on the flexibility and pattern type of the film, some film can also be installed on raised or patterned glass, if the pattern is too high, it may not be possible to successfully install the film, however, all pattern glass usually has a flat side.
Another problem is that the composite curve can be found on the windshield of the car.
This is because the glass is bent in two directions, and the film can be easily applied to a glass bent in one direction, but if it is a composite curve, you may need to heat shrink the film, there are special window colors to choose from, these are usually thinner materials, which are easier to shrink than the standard window film.
There are three technologies with different performance features; these are;
Dyeing, deposition and sputtering.
Stained Window Film dyed films are usually at the cheaper end of the market, but these films should not be ignored because there are some very good stained films on the market.
The bottom of the market is colored by glue, and the film colored by glue mixes the dye with the adhesive (
Scratch resistant coating (
Not always present)
, Polyester (s)
, Adhesive mixed with dye, backing).
These products are usually sold in Asia and South America, but are still sold in Europe.
These films are usually less stable in color, because the protection of dyes is very small, so they fade quickly.
Because the dye is mixed with the adhesive, the color is not always uniform and the color can be moved during installation.
A better dyeing film is to clip the dye into two polyester films, which are more stable in color due to the protection of the polyester film, which also has no problem when installed, because the adhesive is transparent and does not change color.
These films are usually guaranteed for up to ten years.
A common misconception of dyed film is that it can disperse heat into the film.
Since the dyed film can absorb heat and it is installed inside, it is easy for people to understand why this is the case.
However, most of the heat is kept in the glass because the wind speed outside is much larger than inside (
The average outdoor wind speed is more than 15 miles per hour, but the average indoor wind speed is only half a mile per hour)
The outside air attracts heat to the outside.
Some heat leaked to the hotel, but most of it dissipated outside.
Since the double-layer glass unit does not allow air flow between the glass, the internal stained film does not always fit into this type of glass window, prior to installation on the wrong type of glass window, you should make sure to check its applicability, which can cause thermal cracking.
The deposited window film is created by drawing the film through the metal ingot tank (
Usually aluminum or Ni-Cr, but sometimes copper).
Then, reduce the pressure in the tank, create a vacuum, and fill the ar gas in the tank.
When the tank is filled with gas, the metal ingot is heated, and the heat causes the metal to abandon the particles, and the particles migrate to the film surface of the even layer.
By changing the speed of the film through the chamber, the density of metal deposits can be easily controlled.
The sputtering window film is the most complicated step in making the window film.
This process is also carried out in vacuum, but the metalization in this process is achieved at the atomic level.
The magnetic field flows directly from the chemical inert gas (usually Argon)
This ion bombardment (
Often referred to as "Atomic Billiards ")
Causes the atomic group to fall off in the form of a small burst and disperse evenly on the film.
The advantage of sputtering is that about 30 different types of metals can be used;
Various metals can be selected to subtract specific radiation from the solar spectrum.
The metal coating is much lighter;
Can be created in a layer of metal-
Ten percent of human hair thickness