Acid Etching

The acid etching is the first choice when etching innerlayers. Copper chloride, sulfuric acid or iron-III-chloride is used to remove the exposed copper.


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The etching modules have oscillating nozzles, which are arranged either parallel or at right angles to the conveying direction. This SCHMID achieves a uniform etch rate across the entire panel surface. A permanent monitoring of the process parameters guarantees ideal etch results.

  • High etching quality at high etching factor by using the Fineline spray Syste
  • Uniform etching pattern by intermittently etching with single nozzle control
  • Stable process