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Film pasting turns ordinary glass into energy-saving and safe glass?

Adhesive film is a kind of film or laminated film stuck on the glass surface with adhesive and pressure sensitive adhesive. The adhesive film on the glass surface has many functions, such as strengthening, shading, heat insulation and decoration. When sticking the film, the liquid lubricant or the film itself can be coated with pressure-sensitive adhesive. According to the function of the film, it can be divided into shading and heat insulation, sunlight control, low radiation, thermal reflection, grating (laser), enhancement (explosion-proof, anti-theft), frosting, color and printing. Film pasting is usually in indoor glass.

In China's building materials industry standard JC 846- 1999, coated glass refers to a layer of organic film attached to glass products. Under a strong enough impact, glass fragments can adhere to the organic film without flying away. If broken into a hole, the edge of the hole should not be as uneven as uncoated glass. This standard is divided into 1 and 1 1 laminated glass. Class I laminated glass refers to single glass plate without tempering, and Class II laminated glass refers to tempered glass or semi-tempered glass plate. This standard is applicable to architectural glass. Compared with building materials industry standards, the window film mentioned in this paper covers a wider range.

The heat insulation film is attached to the front or back of the glass, which can not only play the role of heat insulation, but also play the role of decoration. The main performance is as follows.

① According to the product type and use, the sunshade film reflects 50% ~ 78% of solar heat energy, and the heat energy transmission is only 65,438+00% ~ 20%, and the sunshade coefficient is 0.20 ~ 0.60, which controls the sunlight and reduces the solar energy entering the room.

(2) The heat insulation film can play the role of heat insulation, and the heat lost through the glass can be reduced to 30% ~ 50%, which will weaken the degree of excessive temperature change, and it is expected to solve the cold wall effect and greenhouse effect, thus saving the cost of air conditioning.

③ Reduce the transmittance of visible light and ultraviolet light. Generally, the visible light transmittance of 3mm transparent flat glass is 8 9%, and the ultraviolet light transmittance of 300 ~ 380 nm is 70%. After sticking the film, films with different colors can be used as needed. The visible light transmittance can be reduced to 10% ~ 50%, and the ultraviolet light transmittance is only 0.4%, which reduces the damage of ultraviolet light to indoor furniture and textile products.

(4) Improve the harmony of architecture. Thermal insulation films have various colors and different light transmittance. After pasting, it can be in harmony with the colors of existing buildings, and it can also play a mirror role. Indoor people and things can't be seen outdoors, but outdoor scenes can be seen indoors, which can replace curtains, reduce the disharmony caused by curtain opening and closing, overcome the disharmony of building appearance and improve building quality.

⑤ Increase the strength and safety of glass. When the glass is broken, the fragments will not fly out and hurt people.

This kind of adhesive film can be divided into sunlight control film, sunlight reflection film and Low-E film, which is difficult to distinguish clearly. It is generally believed that the reflectivity of solar reflective film is slightly higher than that of solar control film and low emissivity film. Low-emissivity film is to prevent indoor radiation energy transmission and achieve energy-saving effect under the condition of ensuring the visible light transmittance as high as possible, and its emissivity E.

Various types of thermal insulation films not only have different values of solar reflectivity, absorption rate, total solar blocking rate and shielding coefficient, but also have an ultraviolet blocking rate as high as 99%, and the corresponding sun protection index is 100, while the sun protection index of ordinary glass is only 0.5 ~ 2.7, and that of sunscreen is only 20. The effect of blocking ultraviolet rays after sticking a heat insulation film is ideal. According to different varieties, the glare reduction rate fluctuates between 42% and 79%. Table 12 The strength of all kinds of plastic films in the river is also relatively high. The tensile strength of. L ~ 5 is 177.3MPa, the breaking strength is 696.3kPa, the peeling strength is1300g cm-1,the puncture strength is 34927 g, and the tensile strength of No.6 is 2000.

The low-emissivity film can block the huge heat of the sun (up to 79% of the solar heat energy) and glare in summer, but it does not affect the light entering the room, making it cooler, but it can reduce the heat loss through the glass in winter. When it is attached to the inner surface of single-layer glass, it can reduce the heat loss by about 30%, which plays the role of warming in winter and cooling in summer.

The base material of thermal insulation film is 15 ~ 50μ m polyester film, which can be colored by magnetron sputtering of various non-ferrous metals, generally silver, gray, bronze, gold, etc. The lower one has a dyed film.

Polyester film is usually formed by condensation of terephthalic acid and ethylene glycol, which has high mechanical strength, chemical stability and low water absorption. The tensile strength can reach 137MPa and the elongation is 70%.

Before pasting the film, the glass should be thoroughly cleaned, and the glass can be cleaned with detergent and rubber to remove all dust and stolen goods. According to the requirements of thermal insulation film varieties, the pressure-sensitive adhesive coated on the surface was bonded by making thermal insulation film. According to a large number of experiments and weatherability tests, the service life of these films can generally reach 10 years or more. 3M Company has been producing various thermal insulation films for more than 30 years.

In recent years, Zhongfu Film is committed to sticking thermal insulation film on building glass to help owners improve their living environment and save energy consumption, which has been well received by users all over the country. In Zhejiang, after more than three years, we have successively installed solar insulation films and safety explosion-proof films for Shangri-La Hotel, Radisson Hotel Hangzhou, Zhejiang World Trade Center Hotel, Wang Hu Hotel, Wuzhou Hotel, Yuan Wah Shopping Center, Bai Jie New Century Commercial Building, Huachen Hotel, Pacific International Hotel, Zhejiang Oriental Hospital, Zhejiang Tongde Hospital, Zhejiang Academy of Fine Arts and Caijia Shipu. We have been in Shanghai for more than five years, including Jinmao Tower, Shangri-La Hotel, Kerry Center, Kerry City that Never Sleeps, Hongqiao Marriott Hotel, Westin Hotel, Portman Hotel, Lansheng Hotel, Xingguo Hotel, Marriott Hotel in Tomorrow Square, Shanghai New World, Rui J Hotel, Raffles Building, Jiushi Building, Huijin Department Store, Shanghai Industrial Building, Oriental International Building, Xinhongqiao Building and Renren Building. It is the user's understanding of the role of solar thermal insulation film. After using insulation, most users feel that the effect of air conditioning is greatly improved and the comfort of the environment is improved, thus achieving the purpose of energy saving.

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