Glass window film is also called solar film and light control film in the early stage. With the expansion of its application range, it is also called explosion-proof film, anti-riot film, and heat insulation film. According to its function, it is also called automobile film, construction film, safety film, etc. , Thickness from 0.0125mm to 0.5mm thick pc anti-riot film, it is a multi-layer functional polyester composite film material, affixed to the glass surface to improve the performance and strength of the glass, so that it has heat preservation and heat insulation , Energy-saving, explosion-proof, anti-ultraviolet, beautification, privacy, safety and safety protection and other functions, mainly used for automotive glass and building doors and windows, partitions, ceilings, etc. The glass window film is processed by dyeing, magnetron sputtering, lamination and other processes on a multi-layer ultra-thin and high-transparent polyester film. It has super toughness and can relieve the glass with low flexural strength and fragile impact. Defects, greatly improving the impact strength of the glass, avoiding personal injury accidents caused by glass breaking and falling off, and fragments splashing; it also has functions such as protection and anti-theft.
According to the different application fields, the current glass window film is roughly divided into three categories: architectural glass window film, automobile glass window film, and safety glass window film.
Architectural glass window film
The main purpose is to save energy and heat insulation, with UV protection and safety functions. This kind of film can also be divided into heat reflection film and low emissivity film. Heat-reflective film. This film is attached to the glass surface so that the room can transmit visible light and near-infrared light, but not far-infrared light. Therefore, there is enough light to enter the room, and most of the solar heat is reflected back, and the indoor temperature will not rise too much in the hot summer, thereby reducing the indoor air-conditioning load, saving air-conditioning costs and saving energy. Low-emissivity film, this film can transmit a certain amount of short-wave solar radiation energy, so that solar radiant heat enters the room and is absorbed by indoor objects; at the same time, it can retain more than 90% of the long-wave infrared reflections radiated by indoor objects indoors. Low-emissivity film can make full use of solar radiation and long-wave radiation energy of indoor objects. Therefore, it can be used in cold areas and heating buildings to achieve thermal insulation and energy saving effects.
Automotive glass window film
Pasted on the inner surface of automobile glass, it has the functions of energy saving, heat insulation, UV protection, safety and theft prevention. At the same time, the visible light transmittance and visible light reflectance of the window film are also very high, especially the front windshield film. According to the "Technical Conditions for Safety of Motor Vehicle Operation", "the visible light transmittance of the front windshield is not allowed to be less than 70%. , All car window glass is not allowed to post mirror reflective sunshade film". Because it is used on the windshield of automobiles, the visible light transmittance after the film must be greater than 70% to meet the requirements of the national standard GB7258-2004.
Safety glass window film
There is a layer of adhesive with strong adhesion between the film and the glass. The film itself has good tear resistance and penetration resistance. Even if the glass is broken, it can maintain the original overall state even if the glass is broken, preventing the glass from accidents. The second damage to the human body caused by broken splashes. Its main function is safety and explosion-proof, and it is generally used in some important places or exhibition halls such as banks and other financial institutions, jewelry store windows, museums, and hotel halls. This film also has a certain degree of heat insulation and ultraviolet ray insulation, and the transparency is also high.