发明公开
EP3077216A1 STRUCTURE DE SECURITE 审中-公开
SICHERHEITSSTRUKTUR

STRUCTURE DE SECURITE
摘要:
The invention relates to a security structure (1) comprising a semi-transparent layer (20) containing a binder (40) and at least goniochromatic metal particles inside the binder in a concentration providing the layer (20) with the semi-transparency thereof.
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