Method to Emboss Holograms into the Surface of Sheet Metals

verfasst von: Bernd Arno Behrens, Richard Krimm, Jan Jocker, Eduard Reithmeier, Bernhard Roth, Maik Rahlves
Abstract: Holograms are industrially used as decorative design elements to increase the value of products. As they are hard to copy, holograms are also used for brand protection and product identification. The state-of-the-art is to emboss holograms in the surface of polymeric foils and to apply them to products by adhesive bonding. Examples are holograms on credit cards, banknotes or identification cards. In this paper, a new method to emboss holograms in the surface of sheet metals is presented. By this, parts made of sheet metal such as decorative interior parts of cars, battery housings or packaging of cosmetic products can be equipped with holograms during their production process. Hence, adhesive bonding and the required additional handling operations are not necessary. An embossing tool and the results of experimental hologram embossing are described. Aluminium Al99.9, aluminium-magnesium alloy AW-5505, copper and zinc-coated deep drawing steel DC05 were used as sheet metals to be embossed. Furthermore, a new method and a device to produce master holograms are presented. Master holograms are required to produce embossing dies with the hologram on its surface (referred to as "shim"). The device is based on a laser light source and a spatial light modulator (SLM). With help of the SLM, simultaneous transfer of 1920 × 1080 pixels of a Computer Generated Hologram's (CGH) topography to a plate coated with photoresist is possible. Compared to today's industrial mastering of holograms which is done pixel by pixel, the time required for the process is much shorter. In addition, investment costs are lower compared to currently used electron-beam-lithography devices.
Organisationseinheit(en): Institut für Umformtechnik und Umformmaschinen
Hannoversches Zentrum für Optische Technologien (HOT)
Typ: Aufsatz in Konferenzband
Seiten: 125-132
Anzahl der Seiten: 8
Publikationsdatum: 24.04.2013
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Materialwissenschaften, Werkstoffmechanik, Maschinenbau
Elektronische Version(en): https://doi.org/10.4028/www.scientific.net/KEM.549.125 (Zugang: Unbekannt)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@inproceedings{838515a269654da19b638390e5fe7e89,
title = "Method to Emboss Holograms into the Surface of Sheet Metals",
abstract = "Holograms are industrially used as decorative design elements to increase the value of products. As they are hard to copy, holograms are also used for brand protection and product identification. The state-of-the-art is to emboss holograms in the surface of polymeric foils and to apply them to products by adhesive bonding. Examples are holograms on credit cards, banknotes or identification cards. In this paper, a new method to emboss holograms in the surface of sheet metals is presented. By this, parts made of sheet metal such as decorative interior parts of cars, battery housings or packaging of cosmetic products can be equipped with holograms during their production process. Hence, adhesive bonding and the required additional handling operations are not necessary. An embossing tool and the results of experimental hologram embossing are described. Aluminium Al99.9, aluminium-magnesium alloy AW-5505, copper and zinc-coated deep drawing steel DC05 were used as sheet metals to be embossed. Furthermore, a new method and a device to produce master holograms are presented. Master holograms are required to produce embossing dies with the hologram on its surface (referred to as {"}shim{"}). The device is based on a laser light source and a spatial light modulator (SLM). With help of the SLM, simultaneous transfer of 1920 × 1080 pixels of a Computer Generated Hologram's (CGH) topography to a plate coated with photoresist is possible. Compared to today's industrial mastering of holograms which is done pixel by pixel, the time required for the process is much shorter. In addition, investment costs are lower compared to currently used electron-beam-lithography devices.",
keywords = "CGH, Embossing, Hologram, Metal forming, Plagiarism, Sheet metal",
author = "Behrens, {Bernd Arno} and Richard Krimm and Jan Jocker and Eduard Reithmeier and Bernhard Roth and Maik Rahlves",
year = "2013",
month = apr,
day = "24",
doi = "10.4028/www.scientific.net/KEM.549.125",
language = "English",
isbn = "9783037856710",
series = "Key Engineering Materials",
pages = "125--132",
booktitle = "Sheet Metal 2013",
note = "15th International Conference on Sheet Metal, SheMet 2013 ; Conference date: 25-03-2013 Through 27-03-2013",
}