Security document having a security thread embedded therein

Details Security document having a security thread embedded therein Security document having a security thread embedded therein

1992-10-26

1994-06-28

Nakarani, D. S.

Printed matter

Having revealable concealed information, fraud preventer or...

In incorporated magnetic material

162125, 162127, 162128, 162140, 283 58, 283 72, 283 83, 283 92, 428204, 428209, 428328, 428457, 428458, 428900, 428916, B32B 316, B32B 1508, B42D 1510

Patent

active

053240790

ABSTRACT:
A security element that can be embedded in the form of a thread or strip in a security document, in particular a paper of value, is composed of two carrier sheets, each of which bears each of the marking substances allowing for detection of authenticity. The two carrier sheets are put together in such a way that the marking substances to be protected from mechanical abrasion and other external influences come to lie on the inside.
The thread not only offers special protection for the marking substances, but can also be embedded in the paper substance easily due to its symmetrical structure and without showing any tendency to curl.

REFERENCES:
patent: 4183989 (1980-01-01), Tooth
patent: 4446173 (1984-05-01), Barrell et al.
patent: 4587161 (1986-05-01), Barrell et al.
patent: 4756557 (1988-07-01), Kaule et al.
patent: 4897300 (1990-01-01), Boehm
patent: 5112672 (1992-05-01), Kaule et al.

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