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Unique security device for the identification or authentication of valuable goods, fabrication process and method for securing valuable goods using such a unique security device
Unique security device for the identification or authentication of valuable goods, fabrication process and method for securing valuable goods using such a unique security device
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机译:用于识别或鉴定贵重物品的独特安全装置,使用这种独特安全装置的用于保护贵重物品的制造工艺和方法
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摘要
A security device for the identification or authentication of valuable goods is described, comprising a thin material layer (22, 26) presenting a stochastic pattern of micro/submicrostructures, where the latter are arranged in blobs (2) each of which presents a complexity factorwhere L is the perimeter of the blob and A its area, and wherein blobs having a Cx value greater than or equal to 2 cover at least 5%, preferably at least 15%, of the device surface. According to a preferred embodiment, the material layer may include a film comprising at least a first and a second polymers arranged respectively within a first and a second phases defining the micro/submicrostructures. Preferred processes of fabrication are also disclosed, as well as a method for securing a valuable good based on such a security device.
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