Demetallizing method and apparatus

Details Demetallizing method and apparatus Demetallizing method and apparatus

1984-06-18

1985-11-12

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156345, 156656, 1566591, 156665, C23F 102, B44C 122, C03C 1500, C03C 2506

Patent

active

045526141

ABSTRACT:
Demetallizing method and apparatus capable of high speed continuous production of selectively patterned metallized polymeric film useful in packaging products are disclosed. Aqueous etchant solution is spray applied to the metallized surface having a pattern of etchant-resistant material applied thereto, the spent etchant solution is spray washed from the surface, and the washed web is dried by hot air drying. Etchant removes metal from exposed areas of the surface of the film while leaving the pattern unaffected, so as to provide a desired visible pattern.

REFERENCES:
patent: 2895814 (1959-07-01), Clark
patent: 3647508 (1972-03-01), Gorrell
patent: 4242378 (1980-12-01), Arai
patent: 4398994 (1983-08-01), Beckett

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