1. What’s Low-E glass?

Low-E glass is low radiation glass. It is formed by coating on the glass surface to reduce the glass emissivity E from 0.84 to less than 0.15.

2. What are the features of Low-E glass?

① High infrared reflectivity, can directly reflect far-infrared thermal radiation.

② The surface emissivity E is low, and the ability to absorb external energy is small, so the re-radiated heat energy is less.

③ The shading coefficient SC has a wide range, and the transmission of solar energy can be controlled according to needs to meet the needs of different regions.

3. Why Low-E film can reflect heat?

The Low-E film is coated with silver coating, which can reflect more than 98% of the far-infrared thermal radiation, so as to directly reflect the heat like the light reflected by the mirror. The shading coefficient SC of Low-E can range from 0.2 to 0.7, so that the direct solar radiant energy entering the room can be regulated as needed

4. What are the main coating glass technology?

There are mainly two kinds: on-line coating and vacuum magnetron sputtering coating (also known as off-line coating).

The on-line coated glass is manufactured on the float glass production line. This kind of glass has the advantages of single variety, poor thermal reflection and low manufacturing cost. Its only advantage is that it can be hot bent.

Off line coated glass has a variety of varieties, excellent heat reflection performance and obvious energy-saving characteristics. Its disadvantage is that it cannot be hot bent.

5. Can Low-E glass be used in one piece?

Low-E glass manufactured by vacuum magnetron sputtering process can not be used in a single piece, but can only be used in synthetic insulating glass or laminated glass. However, it’s emissivity E is much lower than 0.15 and can be as low as 0.01.

Low-E glass manufactured by online coating process can be used in a single piece, but its emissivity E = 0.28. Strictly speaking, it can not be called Low-E glass (objects with emissivity e ≤ 0.15 are scientifically called low radiation objects).