Processes for producing effect layers

    公开(公告)号:US11292027B2

    公开(公告)日:2022-04-05

    申请号:US16312977

    申请日:2017-08-14

    申请人: SICPA HOLDING SA

    IPC分类号: B05D3/00 B05D3/06

    摘要: The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present invention provides processes for magnetically transferring one or more indicia into a not yet hardened coating layer made of a coating composition comprising platelet-shaped magnetic or magnetizable pigment particles so as to produce optical effect layers (OELs) as anti-counterfeit means on security documents or security articles or for decorative purposes.

    Process for producing optical effect layers

    公开(公告)号:US11618053B2

    公开(公告)日:2023-04-04

    申请号:US17422166

    申请日:2019-12-27

    申请人: SICPA HOLDING SA

    IPC分类号: B05D5/06 B05D3/06 B05D3/00

    摘要: The present invention relates to the field of protecting value documents and value commercial goods against counterfeit and illegal reproduction. In particular, the present invention provides processes for producing optical effect layers (OELs) comprising non-spherical magnetic or magnetizable particles and comprising a motif made of at least two areas made of a single applied and cured layer, said motif being obtained by using a selective curing performed by irradiation with an actinic radiation LED source (x41) comprising an array of individually addressable actinic radiation emitters.