what is coated glass
coated glass, also known as reflective glass, is a kind of glass coated with thin film, which can be coated with one or more thin films, and the coating can be metal, alloy or metal compound. Coating can change the optical properties of glass and meet certain requirements. According to the different characteristics of products, coated glass can be generally divided into conductive glass, low emissivity glass, heat reflective glass and so on.
1. Conductive film glass is a kind of conductive film coated with indium tin oxide, etc. It is widely used in liquid crystal displays, such as LCD, solar cells, microelectronic ITO conductive film glass, optoelectronics and various optical fields in modern life, with remarkable effects.
2. Low-emissivity glass is a thin film system plated on the glass surface, which consists of multiple layers of metals or their compounds. It can reduce energy absorption or control indoor and outdoor energy exchange. In building applications, low-emissivity glass can achieve the effect of being warm in winter and cool in summer, and can ensure the comfort of life and work, so as to achieve the purpose of environmental protection and energy saving. Low-emissivity glass is mostly used in buildings and vehicles such as cars and ships.
3. Heat reflective glass is a thin film composed of one or more layers of metals or their compounds plated on the glass surface by physical or chemical methods, and different coating materials can present rich colors. Heat-reflective glass has a high reflection ability to solar light, but it still has good light transmittance, which can effectively reflect solar light, including a large number of infrared rays, and it can make indoor people feel cool and comfortable in sunshine. Thermal reflective glass has good energy-saving and decorative effects, and is mostly used in buildings and glass curtain walls.
the principle of coated glass
there are many production methods of coated glass, among which vacuum magnetron sputtering and chemical vapor deposition are commonly used at present. The principle of vacuum magnetron sputtering coating glass is to deposit the coating material layer by layer on the glass surface by magnetron sputtering technology to form a thin film. Many colors can be plated on white glass substrate, and the film has good corrosion resistance and wear resistance, which is one of the most widely used methods at present.
the principle of chemical vapor deposition is that the reaction gas is introduced into the float glass production line, which decomposes on the hot glass surface and uniformly deposits on the glass surface to form coated glass. This method is characterized by less equipment investment, easy regulation, low product cost and good chemical stability. It can be hot-worked, and it is one of the most promising production methods at present.
how much is the coated glass per square meter
Because of its wide use, the production technology and specifications of coated glass are very different, so its price is also very different. The price of most coated glass in the market ranges from tens of dollars to hundreds of dollars per square meter, and the price of some coated glass with particularly high production process requirements can even be as high as several thousand dollars per square meter.