• 2 Two-layer holograms

Two-layer hologram security seals combining two layers of graphics one on top of the other producing a motive that is very difficult to counterfeit while offering a compelling visual effect. When combined with numbering, the security protection is strong.

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Glue: Stronger

Void layer: Yes

Numbering: Yes

Two-layer holograms
Two-layer holograms represent a seal that is very difficult to counterfeit as it combines two graphic layers one on top of the other at a very affordable price. Each of the layers provides different rainbow effects at the incidence of light creating a very interesting effect. All details do not have to be visible at the same time; you can see just the first or the second layer and then, at a certain angle, you can see them both in a different colour scheme which gives the seal a look of luxury. This is the most used and most produced hologram. The effect is produced though microscopic erosion of the metallic bearing layer at two different depths. This metallic layer is covered by a transparent protective foil that separates from the metallic layer in an attempted peel-off (or transfer) of the hologram label. The metallic layer remains stuck to the surface while the transparent is torn off together with tiny bits of the metallic layer. The unprotected metallic layer is highly prone to damage – it loses its readability after a single rubbing. Hence, the hologram is invalidated at first glance.

Numbered two-layer holograms
These are standard two-layer hologram with a unique serial number, most often laser cut in order to remove the metallic layer. The label is transparent where the metallic layer is removed. Numbers can also be printed by thermal transfer printing. These numbered labels are always kept in stock in sufficient quantities. Thanks to the numbering, they are used to secure efficiently important documents such as contracts, resolutions, permissions, reports, certificates, licences, confirmation letters or asset classification. The hologram’s unique numbers increase significantly the security level as no seal bears the same number. Hence, you can purchase at a low production cost a security hologram that, in some respects, provides the same level as custom-made holograms, even though it is produced and sold in large lots. Any non-authorized attempt to remove the seal is easily recognized thanks to the metallic layer that gets torn off in the removal attempt and remains stuck to the bottom layer of glue.