Breiner & Breiner
Security card comprising a thin glass layer
 A security card is disclosed which comprises a laminate of a flexible glass layer and a support, characterised in that the glass layer has a thickness of not more than 350 .mu.m. The thin glass layer has sufficient flexibility to allow substantial bending of the card without causing breakage of the glass. In addition, the glass layer acts as a security feature because delamination in order to falsify information stored in the card is very difficult without breaking the glass. The glass is also an efficient barrier layer protecting the information stored in the card from mechanical damage and from degradation due to permeation of gases such as oxygen or water vapour. 
Agfa-Gevaert
B G H G H B G G G H B B H B Y H G B H G H B G G Y
B32B G03C H01L G02B H01L B32B G06K G06K G03C H01L B32B B32B H01L B32B Y10S H01L G02F B32B H01L G03C H01L B32B G06K G03C Y10S
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Herman Leo Jean-Pierre Bart
Van Gorp Vermeulen Tahon Verlinden