Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1982-03-17
1983-08-02
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
29576S, 156645, 156656, 156902, 357 70, C23F 102, B44C 122, C03C 1500, C03C 2506
Patent
active
043964575
ABSTRACT:
Mechanically punching bumps in a thin copper or aluminum foil and etching the foil to form beams with a bump at the end of each beam. Alternatively increasing the layers by casting or gluing polyimide film to the foil and etching the polyimide film in designated areas to expose the copper or aluminum.
REFERENCES:
patent: 3049791 (1962-08-01), Shackman
patent: 3399452 (1968-09-01), Reid
patent: 3480836 (1969-11-01), Aronstein
patent: 3838984 (1974-10-01), Crane et al.
patent: 4052787 (1977-10-01), Shaheen et al.
patent: 4063993 (1977-12-01), Burns
patent: 4125441 (1978-11-01), Dugan
patent: 4209355 (1980-06-01), Burns
Insulation/Circuits, vol. 25, No. 10, Sep. 1979, Sallo, J. S., Bumped-Beam Tape for Automatic Gang Bonding, pp. 65-66.
E. I. Du Pont de Nemours and Company
Powell William A.
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