Electrolytic treatment device for preparing plastic parts to be metallized and a method for etching plastic parts
AssigneeCoventya, Inc.
InventorsGiorgio Tesser, Sandrine Dalbin
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Abstract
The present invention refers to an electrolytic treatment device having an anodic compartment comprising a non-chromium (VI) etching solution to be treated and immersed therein an anode. The anodic compartment is separated by a membrane from a cathodic compartment comprising a cathodic solution comprising an inorganic acid, wherein the anode and the cathode are used comprising or consisting of a ternary or higher Pb alloy with Sn and at least one further metal selected from the group consisting of Sb, Ag, Co, Bi and combinations thereof. Moreover, a method for etching plastic parts is provided as well.
Claims15
An electrolytic treatment device having
- an anodic compartment comprising a chromium (VI) free etching solution as anolyte and immersed therein an anode,
- a cathodic compartment comprising a cathodic solution comprising an inorganic acid as catholyte and immersed therein a cathode,
- a membrane separating the anodic from the cathodic compartment;
- wherein the anode, and optionally the cathode, consist(s) of a ternary or higher Pb alloy with Sn and at least one further metal selected from the group consisting of Sb, Ag, Co, Bi, and combinations thereof,
- wherein the chromium (VI) free etching solution consists of:
- 47-74 wt % of at least one inorganic acid,
- 0.01-5 wt % of at least one periodate salt,
- 0.01-0.5 wt % of at least one manganese salt,
- 0.01-5 wt % of at least one iodate salt, and
- water up to 100%.
Dependencies are inferred from the claim text.