Macdermid, Incorporated

Michael S Lombardo

John J Grunwald

Eugene D D'Ottavio

Elaine F Jacovich

Harold L Rhodenizer

A process is disclosed comprising laminating an anodically treated aluminum surface against a thermoset plastic substrate, whereby the surface of the substrate after chemically removing the aluminum has an improved affinity for the adherence thereon of electrolessly deposited metal films.

Process of preparing thermoset resin substrates to improve adherence of

An improvement is obtained in the bond strength between members of a laminate comprising a plastic substrate and a metal film through a process of first laminating to the plastic substrate a thin, sacrificial, anodized metal foil while providing at the interface prior to laminating of the foil to the plastic at least a mono molecular film of an organic silicon compound. After laminating the treated metal foil to the substrate under heat and pressure, the foil is chemically stripped from the substrate, leaving a surface of improved receptivity for conventional electroless plating and electroplating procedures, or other metallizing techniques. The final metal film when applied to the substrate exhibits consistently better adhesive strength than is obtained without the organic silicon treatment of the interface, especially in respect to adhesive strength at elevated temperature.

Method of making metal-plastic laminates

An improvement is obtained in the bond strength between members of a laminate comprising a plastic substrate and a metal film through a process of first laminating to the plastic substrate a thin, sacrificial, anodized metal foil by heat and pressure, chemically stripping the foil from the substrate surface, activating the surface for electroless plating and electrolessly depositing a metal thereon, wherein the substrate is contacted with an aqueous solution containing an organic silicon compound at some stage subsequent to said chemical stripping operation. The final metal film when applied to the substrate exhibits consistently better adhesive strength than is obtained without the organic silicon treatment.

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Waterbury, CT, United States of America

Michael S Lombardo