What is Out off Line and Online Low-e glass?

20-03-2023

During the tempering process, online Low-E glass will withstand high temperatures close to the softening point of the glass. At this time, the color of the film may have some changes, leading to color differences. Offline Low-E glass has a small change in color difference due to high temperature resistance.

The tempering of online Low-E glass is carried out with a film. The existence of the film causes asymmetric heating on both sides of the glass, making the tempering process difficult to control, and may cause a series of problems such as large tempering deformation. While offline Low-E glass is tempered before coating, there is no problem.

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