Protective Coatings

DLC & PVD coatings for the minting industry

Problem

Coin minting is facing major challenges: In particular, the adhesion of precious metals such as gold, silver or platinum during minting and the high level of tool wear lead to frequent tool changes, production interruptions and rising costs. Structured embossing dies with intricate laser engravings or integrated security features are subject to particularly high stresses and quickly lose precision.
Complex intermediate steps such as repolishing or cleaning stressed embossing dies cost additional time and impair process stability.
Embossing plants worldwide are therefore looking for solutions to sustainably increase the quality, efficiency and durability of their tools.

Solution

With its laser-based PVD coating technology, ANTACON offers a pioneering solution for embossing plants. Our coating solutions effectively protect embossing dies, extend the service life by up to a factor of 20 and guarantee consistently brilliant embossing quality from the first to the last embossing of a run. Even the finest laser structures and security features remain permanently sharp and clearly visible, without heavy tool wear or production interruptions. The result: higher efficiency, lower costs and flawless coins, which make the value of each coin visible through precision and high quality.

Advantages of DLC and PVD coatings

  • Up to 20 times longer service life for highly stressed components

  • excellent protection of laser-structured and micro-structured surfaces (for brilliant embossing results up to “polished plate” proof, PP)

  • Significantly reduced adhesion when embossing silver and gold

  • Abrasion resistance for extreme operating conditions without coating flaking

  • Significant reduction in reworking such as repolishing

  • Ideal for series production
    (from batch size 1 to medium series)

HIGH-END
PROTECTION
without compromise

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Applications in the coin industry

Coining dies, embossing rollers, plating rollers, rollers

From bullion coins to collector coins (proof, PP): dies with DLC coating for lasting attention to detail and the highest minting quality

    these challenges

    Can we solve

    Even high-precision surfaces quickly reach their limits after thousands of minting cycles. DLC coatings ensure lasting precision, maximum wear protection, and stable processes in coin minting.

    • Wear and tear

      abrasive wear, adhesive wear, wear-intensive

    • Friction

      Dry friction, mixed friction, boundary friction

    • Adhesion of material

      Wear of the stamp surface, loss of detail, material build-up, deposits, adhesion of silver and gold, contour wear

    • Laser-structured surfaces

      Loss of detail, adhesions

    • High operating costs

      Maintenance-intensive, cost-intensive, inefficient