Window film structure:
Lining: this layer is separated from the film during the installation process, the adhesive layer is ready to contact with the activating solutions.
Adhesive layer: This layer creates a bond between the window film and the glass, which includes several mechanisms such as chemical bonding, mechanical bonding, and penetration into the amorphous structure of the glass. It should be noted that due to the penetration of this layer in the structure of the glass, the tolerance of the glass against blows has increased so that the glass shows more resistance against breaking. Because the adhesive layer is the first layer that the sun's rays come into contact with, UV absorbers have been used in it to protect the structure of the window film from this radiation, that's why the window life of new films is much higher It is one of the old examples.
UV blocking layer: This layer is exclusively designed to prevent the entry of UV rays and contains UV absorbers. In order to prevent this harmful radiation, most of the window films rely only on the presence of ultraviolet absorbing materials in their adhesive layer. Whereas LLumar uses a separate layer to block the rays and blocks 99% of ultraviolet rays.
Metal coating layer: This layer is the most important and valuable layer of window film because its production technology is very advanced and it has important efficiency. In this layer, heavy metals such as gold, silver, chrome, nickel, etc. are coated on the polymer substrate by two methods: metallizing (evaporation under vacuum) and sputtering (plasma mode under vacuum). (infrared) are Therefore, the origin of solar heat rejection property in films is this metal layer.
Strengthening layer: This transparent layer is made of reinforced polyester polymer, which is thicker than other layers. This layer is the source of safety and security properties in window films, which can hold all the different parts of the glass together and prevent it from collapsing when the glass breaks due to blows, earthquakes and unexpected events. In some types of window films, pigments are used in this layer, which makes the window films have a colorful, beautiful and pleasant appearance.
Scratch-resistant layer: This layer is made of acrylic and is the most superficial layer of the window film, and it makes this product resistant to scratches and wear, so that common glass cleaning materials and accessories do not harm this product. At the end of this section, it is mentioned that all these layers are compressed together in the form of a product with an average thickness of one tenth of a millimeter.
Among other advantages of this label (window film):
It is thermal insulation and is used to prevent energy loss.
It prevents the penetration of dangerous rays inside.
It is more affordable than laminated glass.
It is completely invisible and does not change the color and transparency of the glass.
It is much lighter than laminated glass.
It should be noted that due to the desire of most building and tower builders to use light materials, with a reasonable price and high performance, the windows made with window film meet all the above requirements and as a new product with the same mechanism as glass. High laminate works.