The information found here for Kluge’s May Tip of the Month was provided by KURZ USA (http://www.kurzusa.com/). Copyright LEONHARD KURZ GmbH & Co. KG 2003.
OVD – Patch Application
Single OVD-pictures (patch) applied in an advanced hot stamping process onto monetary and ID documents, plastic cards and a wide range of commercial products are covering the majority of OVD-applications nowadays. Sophistication of the used optical technology resp. or combinations of security components, the authentication potential, as well as the functional integration in the overall document concept, determine the security value of the OVD-feature.
In close cooperation with respective Central Bank Printers, KURZ developed highly durable OVD-hot stamping foils for the application onto polypropylene substrates, finally leading to the polymer banknote technology promoted now worldwide for long life banknotes.
BANQUE DE FRANCE and KURZ jointly developed and patented the STRAP® (Système de Transfert Réfléchissant Anti Photocopie), an effective and economic OVD-stripe to prevent photocopy and reproduction of documents such as banknotes and similar security documents.
The specific partially demetallized discontinuous “bar” – pattern has been designed regarding dimensional and geometric frame conditions in order to generate black reproduction, which obviously differentiates the appearance of the photocopy when compared to the original. The additional overprinting of the STRAP® by offset and intaglio improves the design integration as well as security against simulation.
The economical advantage of the continuous OVD-stripe application combined with the security provided by KURZ OVD-components of diffractive and partially demetallized features, generated the basis for the growing interest in this type of OVD-application in all levels of the security market. Extensive R&D-work at KURZ with regard to adhesion chemistry and application processing finally lead to a highly resistant OVD-stripe directed to the low denomination banknote field where a long lifetime of the document in circulation under drastic handling conditions is obligatory. Primer based OVD-Stripe solutions is using the described advantages of the KURZ OVD-stripe performance.
Protectus®, the KURZ product group of high security laminates offers the benefits of diffractive metallized or transparent OVD’s embossed into a laminate film to protect against alteration of the personal data recorded on passports and ID-cards. Protectus® incorporates all kinds of OVD-components as an integrated part of the laminate. Any attempt to remove the laminate. Any attempt to remove the laminate destroys the OVD-features immediately and shows that an attempt of falsification has occurred.
Tamper Evident OVD-Stickers
Self Adhesive OVD-stickers with tamper evident properties are the ideal solution to protect commercial products especially those representing a brand name of high market reputation against forgery, manipulation and simulation. The alternative between manual or automatized labeling allows an almost unrestricted usage also in areas of lower standards of industrialization.
Synthesize Your Tailor-made OVD-Feature
Since the key philosophy in KURZ’ commercial strategy is customer orientation, especially in the security field, our team in the division Security Concepts is used to the process of developing tailor-made security OVD-features according to the actual project related requirements in close cooperation with the client.
The functional OVD-tools as basic components for this development work, are summarized in the KURZ Security Construction Kit. Obviously, any of its components may be used as a “stand alone” feature providing its specific functional security value. In order to meet existing high requirements of:
- recognition of authenticity
- protection against counterfeiting and simulation
- integration in banknote design
- machine detection of authenticity and quality
It may be necessary to synthesize the suitable OVD-feature by combining several of the described OVD-components. The beauty of the KURZ Security Construction Kit is the potential provided by the freedom of combination of the components.