Demetallizing method

Details Demetallizing method Demetallizing method

1985-04-16

1986-09-09

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156635, 156638, 156656, 156658, 156665, 156345, 252 795, C23F 102, B44C 122, C03C 1500, C03C 2506

Patent

active

046107550

ABSTRACT:
Demetallizing method and apparatus capable of high speed continuous production of selectively patterned metallized film, particularly polymeric film, useful in packaging products are disclosed. A water-based varnish having etchant dissolved therein is printed on the metallized surface in a desired pattern, the spent etchant solution is washed from the etched surface while the other surface is maintained out of contact with the wash water, and the etched web is dried.

REFERENCES:
patent: 3647508 (1972-03-01), Gorrell
patent: 4348255 (1982-09-01), Schmidt
patent: 4398994 (1983-08-01), Beckett

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