Method for manufacturing anti-counterfeiting element with negative characters

Abstract

The invention relates to a method for producing a security element (1) with negative inscriptions (3), comprising the following steps: a) producing a first security element sub-element (10) by providing a first carrier substrate (11 ); applying a first functional layer (12) to the first carrier substrate (11); applying a resist layer (30) to the first functional layer (12) in the form of a predetermined pattern (7), the predetermined The pattern has resist areas (33) and grooves (34) located between the resist areas; b) manufacturing the second anti-counterfeiting element sub-element (20) by: providing a second carrier substrate (21); placing the second A functional layer (22) is applied to said second carrier substrate (21); c) Assembling the first security element sub-element (10) and the second security element sub-element (20) into a composite (5) such that it resists corrosion The layer (30) and the second functional layer (22) face each other and bond the first anti-counterfeiting element sub-element (10) and the second anti-counterfeiting element sub-element (20) together; d) the second carrier substrate (21) Detached from the bonded composite (5), the second functional layer (23) remains adhered to the resist area (33) due to the formation of the second functional layer (23), while, Other areas of the second functional layer (22) are detached together with the second carrier substrate (21), forming a second groove (24) in the second functional layer (22); and e) by means of etching The area of ​​the first functional layer (12) that is not protected by the resist area (33) is removed to form the first functional area (13) and the first groove (14), the first groove is connected to the resist area (33). The grooves (34) in the resist layer (30) and the second grooves (24) in the second functional layer (22) made of resist material together form negative characters (3).

Description

technical field [0001] The invention relates to a method for producing a security element, a security element obtained by means of the method, an object of value equipped with the security element and a method for producing such an object of value, the security element comprising The security element is configured as a transfer element with two pattern layers in registration with one another, in particular pattern layers having symbols that are visually recognizable in transmitted light and preferably also in incident light. Background technique [0002] Objects of value, especially valuable documents such as banknotes, shares, ID cards, credit cards, deeds, checks and other documents at risk of forgery (e.g. with various types of identity documents) also branded goods and branded goods packaging, usually for security purposes, is equipped with a security element capable of checking their authenticity and at the same time acting as a safeguard against unauthorized copying. ...

AI Technical Summary

Problems solved by technology

As a result, overprinting with corresponding solvent-containing systems leads to swelling of the thermoplastic resist despite the functional layer transferred in the transfer step

Also, there may be damage to any structures imprinted in the functional layer, such as metallizations

In addition, there is still a permanent lack of resistance to solvent alone on the layered composites obtained

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