Pre-treatment for plating technique

Details Pre-treatment for plating technique Pre-treatment for plating technique

1993-12-09

1994-08-09

Powell, William

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156654, 252 792, 427307, 427306, B44C 122

Patent

active

053363701

ABSTRACT:
A method of preparing an electrically insulating polymer substrate, particularly those containing an aromatic group, for the reception of an electrically conductive pattern, said substrate having a glass transition temperature or a softening temperature, comprises the steps of: performing a first cleaning of the substrate; heating the substrate in a nitrogen atmosphere for about 3 hours at a temperature of about 20.degree. C. below the glass transition temperature or the softening temperature of the substrate; cooling the substrate to room temperature; roughening the surface of the substrate by, for example, etching said substrate in a chromic acid-containing solution for about 3 minutes at a temperature of between 65.degree. C. and 70.degree. C.; and performing a second cleaning and drying of the substrate.

REFERENCES:
patent: 4374709 (1983-02-01), Combs
patent: 4448836 (1984-05-01), Gatzschmann et al.
patent: 4457951 (1984-07-01), D'Amico et al.
patent: 4560445 (1985-12-01), Hoover et al.
patent: 4576685 (1986-03-01), Goffredo et al.
patent: 4748056 (1988-05-01), Nuzzi et al.
patent: 4775449 (1988-10-01), Dumas et al.
patent: 4775557 (1988-10-01), Bastenbeck et al.

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