How do you make glass that is thinner than an A4 sheet of paper and only 0.05mm thick?

Thinner than A4 paper, it can not only bend like plastic, but also has super high strength. This glass is made of limestone. So how is it made?

First of all, other additives are added to the limestone in a certain proportion to increase the optical transparency and electrical sensitivity of the glass. At the same time, some waste glass is also added to make the best use of it. The ratio of these raw materials directly determines the properties of ultra thin glass.

After a good stirring, the raw material is transported to the next station, where the mixture is poured into the feeding mechanism and dribbled into a furnace at 1,500 degrees Celsius until it is fired to a honey-like consistency. The molten liquid is then funneled through a narrow gap, creating the ultra thin size of the glass.

As the glass cools, it releases the stress inside. The thinnest glass can be up to 0.05mm thick, and ultra-thin glass can even be bent into a ring, giving it greater strength and toughness than ordinary glass.

 The bubbles are then removed by detecting them with a tiny camera and laser sensor. The ultra thin glass looks more like a film, and the final chemical treatment can further strengthen the ultra thin glass.