Copper Foils Views

• General Goods

Oak-Mitsui is recognized as the technological leader in the manufacture of high-quality electrodeposited copper foils for the printed circuit board industry. With the strength of international scope, Oak-Mitsui produces both conventional cladding and application specific copper foils required by technology's leading edge companies.

At Oak-Mitsui, copper foils are electroformed on revolving titanium drums, unique for the ability to deposit copper foils with a high-quality surface. Electroformed foils are then subjected to a variety of surface treating operations contingent upon end-use requirements. During treating, copper dendrites are deposited onto the foil surface to enhance bonding to B-staged resins upon lamination. A a"barrier-layerc" is deposited for promoting reliability in thermal applications, specific proprietary organic layers are applied to promote chemical adhesion, and foils are stain-proofed to prevent oxidation in shipping, storage, lamination and post-bake cycles.