Low-E glass has a low rate of emission - that is it has a lower rate than clear float glass of allowing heat to pass through the glass. In other words, if there is a heat source inside your house (or outside), the glass bounces the heat from that object back away from the glass.
So, in the winter months, if you have Low-E glass in your home, much of the warmth (heat) given off by air conditioners, heaters and all the objects which they have heated, is bounced back into the room. In the summer, the same thing happens but in reverse. The sun heats things up (the air, sidewalks, driveways, next door neighbours bricks, etc. ) outside of your house. This heat radiates from those objects and tries to get into your house. With Low-E glass much of this heat bounces off the glass and stays outside.
There are two types of Low-E glass: Online coated Low-E (hard coat) and offline coated Low -E (soft coat). As you might imagine, they have different properties. In fact, they actually look different.
Online coated Low-E glass (hard coat) - is manufactured by pouring a thin layer of metallic oxide onto a sheet of glass while the glass is still on the float line, just after it has been formed into a thickness ribbon. The metallic oxide layer actually becomes "welded" to the glass surface. This process makes it very difficult or "hard" to scratch or remove the coating - therefore why it is referred to as "hard coat". Often this glass has a bluish tint to it.
Off line coated Low-E glass (soft coat) - involves the application of silver, zinc or tin (or a combination of) to glass that has already been formed and taken off the float line. The glass enters a vacuum chamber filled with an inert gas which is electrically charged. The electricity combined with the vacuum allows molecules of metal to sputter onto the glass. The coating is "softer" than online coated glass - therefore why it is referred to as "soft coat".
Furthermore, if silver is used (and it often is) the offline coating can oxidise if exposed to normal air. For this reason, offline coated Low-E glass must be used in an insulated glass unit (IGU). Sealing the coating in between two pieces of glass protects it from outside air and sources of abrasion. Also, the space between the two pieces of glass is often filled with argon gas. The argon gas inhibits oxidation of the metallic coating. It also acts as an additional insulator.
For the building glass, we can also provide some kinds of glass, e. G.: Float Glass, Sheet Glass, Patterned Glass, Laminated Glass, Tempered Glass, Solar Glass and so on.
Qingdao Brilliant glass Co., Ltd. Was found in Qingdao city shandong province China, near to Qingdao port. As one of mainly glass exporters in China, offer any glass products from Chinese glass manufacturers with reliable quality and competitive prices and quickly consignment according to your requirement.
We can offer all kinds of glass and mirror such as Sheet glass, Clear and color float glass, Reflective float glass, Silver Mirror on float glass, Aluminium Mirror on float glass, Pattern (figured) glass, Louver glass, Tempered glass, Wired glass, Frosted glass, Glass block and the other processing glass according to your order. And we have developed deep business relation with costumers from U. S. A, Europe, Russia, Australia, Middle East, Africa, and many other countries in Asia.
If you are interested in our glass products, or if you have any other requirements, please don't hesitate to contact us, we assure we will be your reliable partner in future.
