Process for metal-coating plastic surfaces
AssigneeSEP Gesellschaft fur technische Studien Entwicklung Planung mbH
InventorRainer Huss
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Abstract
A process for metal-coating plastic surfaces by chemical pretreatment with n acid pickling agent whereby to prepare the plastic surfaces for the subsequent superposition thereon of a metal layer is described. The plastic surfaces to be coated are chemically pretreated by means of an acid pickling agent in the gaseous phase, the chemical pretreatment is then terminated by chemical reaction of the said pickling agent with another material in the gaseous phase to form gaseous reaction products. If desired, the chemically pretreated plastic surface may then be treated with an aldehyde in solution. The treated surface may then be metal coated, if desired employing a galvanic process without external current.
Claims14
In a process for preparing plastic surfaces for the subsequent superposition of a metal layer thereon, the chemical pretreatment of said surfaces with an acid pickling agent, the improvement which comprises carrying out the chemical pretreatment in a gaseous phase in a closed container, terminating said chemical pretreatment by chemically reacting said pickling agent with a gaseous reactant in said closed container to thereby produce a non-corrosive reaction product.
Dependencies are inferred from the claim text.