Why does float glass sound like plastic?

Because float glass is thicker and feels like plastic. Float glass is flat glass produced by float method. Its manufacturing principle is as follows: firstly, the raw material inorganic oxide of glass is heated and melted, and the molten glass floats on the liquid metal tin at a uniform speed, and forms a plane by the self-weight and surface tension of the glass, and then becomes flat glass after cooling.

Float glass is characterized by high quality, smooth surface, uniform thickness and small optical distortion. High output, low energy consumption per unit product, fast production speed and easy automation. Product specifications are diversified, and online tempering and online coated glass can be continuously produced.

Development history of tempered glass

The development of tempered glass can be traced back to the middle of17th century. A prince named Robert from the Rhine once did an interesting experiment. He put a drop of molten glass into cold water and made a very hard glass. This kind of high-strength granular glass is like a water drop with a long and curved tail, which is called Prince Robert Granule.

However, when the tail of the small grain bends and breaks, the whole small grain suddenly collapses violently and even becomes fine powder, which is very strange. The above practice is very similar to the quenching of metal, which is the quenching of glass. This kind of quenching does not change the composition of glass, so it is also called physical quenching, so tempered glass is called quenched glass.

The first patent for glass tempering was obtained by the French in 1874. Tempering method is to heat the glass to near the softening temperature and immediately put it into a relatively low temperature liquid tank to improve the surface stress. This method is the early liquid tempering method.

Frederick Siemens of Germany obtained a patent in 1875, and Geovge ERogens of Massachusetts of the United States applied the tempering method to glass glasses and lamp posts in 1876. In the same year, HughOheill of New Jersey received a patent.