The continuous process behind the soft coating of blades with PTFE (Teflon®)

Razor blades and other blades are often coated with PTFE (Teflon®) for a smoother cut.

In our furnace systems, blades are coated with PTFE in the following steps:

  • Provisioning of the blades on customer-specific magazines (also called "bayonets" or "swords")
  • Preheating of the blades, thereby ensuring the evaporation of the solvent during coating. Alternatively, the blades can be cold coated and then dried.
  • Coating the blade edges with water-based PTFE; it is important that all blade edges are evenly coated
  • Heat treatment (also called "sintering") under protective gas; it is important that all cutting edges are heated evenly
  • Cooling under inert gas, removal of the magazines
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