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GeneralINORCOAT Minting

Vision for mints – decoating dies without chemicals

World Money Fair - 20th Technical Forum - February 1, 2024

The idea:

  • PVD Cr-Coating
  • Long Life Processing
  • Laser Decoating without Cr (VI)
  • RePolish
  • PVD ReCoating

Sustainable, environmentally friendly cycle

1. PVD coating:

+ Physical process
+ No formation of harmful gases
+ No Cr(VI)
+ No waste materials

2. Long life processing:

+ Increased die life
+ Increased quality
+ Up to 14 million coins
+ Proven on circulation dies

5. PVD ReCoating:

+ Physical process
+ No formation of harmful gases
+ No Cr(VI)
+ No waste materials

3. Laser decoating:

+ Use of „conventional“ production laser
+ Exact removal of the complete PVD coating including defects
+ > 10 min processing time
+ Precise configuration of material parameters for exact rework

4. Machine polishing:

+ Less > 5 min processing time
+ Proven on circulation dies
+ Very short processing times
+ No special polishing media needed

The release of hexavalent chromium, Cr(VI) for short, a carcinogen that is formed during classic chrome plating and also decoating and is the most harmful oxidation stage of chromium, poses high health risks for employees as well as far-reaching environmental hazards.

Chromium is therefore subject to very strict regulations in important markets worldwide. In the EU, Cr(VI) is covered by the REACH regulation. In the USA, too, chromium is strictly regulated by the federal OSHA agency, which is responsible for health and safety.

The INORCOAT PVD development center has been working for some time on chrome-free coating solutions for the coin and printing industry with comparable or even better properties than chrome coatings.

INORCOAT‘s holistic approach is not only concerned with the environmentally friendly use of resources and the avoidance of toxic waste materials during the PVD coating of components and workpieces, but also includes the temporarily necessary decoating.


Author Grafenstein

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