Metal-film laminate resistant to delamination

Details Metal-film laminate resistant to delamination Metal-film laminate resistant to delamination

1997-07-10

2000-05-09

Mayes, Curtis

Stock material or miscellaneous articles

All metal or with adjacent metals

Microscopic interfacial wave or roughness

428623, 428626, 428675, B32B 310

Patent

active

060601752

ABSTRACT:
A flexible metal-film laminate can comprise a layered film structure having a metal layer securely bonded to a film layer. The laminate contains a unique metal-oxide attachment structure between the film and metal layer comprising randomly distributed regions of metal-oxide. After the metal/metal-oxide layer, a chromium metal or chromium alloy layer is formed before subsequent layers of copper, gold, etc. The peel strength of such a laminate is significantly improved over prior laminates and is resistant to peel strength reduction due to environmental stress. The preferred metal-film laminates made with polyester or polyimide can be used in the manufacture of high-quality, low cost, flexible printed circuit boards.

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