Forming security thread for currency and bank notes

Details Forming security thread for currency and bank notes Forming security thread for currency and bank notes

1990-10-29

1991-11-26

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156633, 156634, 156656, 156668, B44C 122, C23F 102, B29C 3700

Patent

active

050680080

ABSTRACT:
A metallized plastic strip containing security indicia is incorporated within currency paper to deter counterfeiting. The plastic strip is made difficult to detect under reflected light by selective pigmentation to match the currency inks. The presence of the security indicia is verified by detection under transmitted light.

REFERENCES:
patent: 4242378 (1980-12-01), Arai
patent: 4652015 (1987-03-01), Crane
patent: 4943093 (1990-07-01), Melling et al.

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