What Is a Glass Bubble?
A glass bubble is a hollow spherical object made of glass.
There are primarily two methods for manufacturing these bubbles. One is the glass-melting method, in which glass is melted in a furnace and then shaped using a glass bubble manufacturing machine. The other is the glass-blowing method, where glass is blown from glass tubes and then shaped using a glass bubble manufacturing machine.
Glass bubbles find applications in various fields, with one of the primary uses being insulation material. The voids inside glass bubbles have lower thermal conductivity compared to normal air or gas, providing excellent insulation properties. Additionally, due to their lightweight nature, they serve as lightweight materials and also as reinforcement materials capable of withstanding strong impacts.