Glass flakes

From Wikipedia, the free encyclopedia

Glass flakes are extremely thin glass plates with an average thickness of 5 ± 2 micrometers.[1]



There are two main methods to manufacture glass flakes. The first is the "bubble method",[2] where a glass marble is turned into liquid and then blown into a bubble. It is then smashed into glass flakes and sieved by particle-size distribution. The second method is the "centrifuge method",[3] in which high-temperature liquid glass in a rotating tub creates glass flakes due to the centrifugal force.


Glass flakes can be applied in anti-corrosive coatings, paints and pigments to prevent corrosion.[4][5] Glass flakes can also be used as a reinforcement material in the manufacture of composite materials.[6]

Glassflakes or glass flake particles form dense, inert barriers within the paint film. Overlapping layers of glass resist water and chemicals permeating the paint film. The addition of glass also increases the flexibility, hardness and abrasion resistance of coatings.

Leading supplier[edit]



  1. ^ Rubberchem 2006. iSmithers Rapra Publishing. 2006. ISBN 9781847350053.
  2. ^ "Method for Producing Glass Flake".
  3. ^ "Method and apparatus for forming glass flakes".
  4. ^ Geoffrey Pritchard (1999). Novel and Traditional Fillers for Plastics. iSmithers Rapra. pp. 53–54. ISBN 978-1-85957-183-5.
  5. ^ "Glass Flake".
  6. ^ Davis, Joseph R. (1992-01-01). ASM Materials Engineering Dictionary. ASM International. ISBN 9781615031733.
  7. ^ "Glassflake Ltd - A World Leader in Glassflake Performance Engineering". Glassflake. Retrieved 2023-03-24.
  8. ^ "NSG Group - Changing our surroundings, improving our world". Retrieved 2023-03-24.
  9. ^ "Glass Flake". Glass Flake. Retrieved 2023-03-24.