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    METHODS FOR PRINTING TACTILE SECURITY FEATURES
    3.
    发明申请
    METHODS FOR PRINTING TACTILE SECURITY FEATURES 有权
    打印战术安全特征的方法

    公开(公告)号：US20150174945A1

    公开(公告)日：2015-06-25

    申请号：US14406903

    申请日：2013-04-16

    Applicant: SICPA HOLDING SA

    Inventor： Christophe Garnier ,  Lucien Vuilleumier ,  Pierre Degott

    IPC: B42D25/378 ,  B42D25/29 ,  B42D25/405 ,  B42D25/369 ,  B42D25/382 ,  B41M3/14 ,  B42D25/364

    CPC classification number: B42D25/378 ,  B41M1/04 ,  B41M1/10 ,  B41M1/12 ,  B41M3/14 ,  B41M3/144 ,  B41M3/148 ,  B41M3/16 ,  B41M7/0081 ,  B42D25/29 ,  B42D25/364 ,  B42D25/369 ,  B42D25/382 ,  B42D25/405 ,  B42D2033/16 ,  Y10T428/24355

    Abstract: The present invention is related to a process for manufacturing a security feature comprising a tactile pattern, said method comprising the steps of applying on a substrate a radiation-curable basecoat composition by a process selected from the group consisting of inkjet, offset, screen printing, flexo printing and rotogravure; at least partially or fully radiation-curing said radiation-curable basecoat composition so as to obtain a radiation-cured basecoat; applying on the radiation-cured basecoat obtained under step ii) a radiation-curable topcoat composition in a form of indicia by a process selected from the group consisting of screen printing, flexo printing and rotogravure; radiation-curing said radiation-curable topcoat composition so as to form a radiation-cured topcoat, wherein the radiation-curable basecoat composition and/or the radiation-curable topcoat composition comprises one or more machine readable feature substances independently selected from the group consisting of cholesteric liquid crystal pigments, luminescent compounds, infrared-absorbing compounds, magnetic compounds and mixtures thereof, and wherein the radiation-cured basecoat has a surface energy at least 15 mN/m less than the surface energy of the radiation-cured topcoat. The present invention is furthermore related to a corresponding security feature and it use for the protection of a security document against counterfeiting or fraud.

    Abstract translation: 本发明涉及一种用于制造包括触觉图案的安全特征的方法，所述方法包括以下步骤：通过选自以下的方法在基材上施加可辐射固化的底涂层组合物：喷墨，胶印，丝网印刷， 柔版印刷和轮转凹版印刷; 至少部分或全部辐射固化所述可辐射固化的底漆组合物，以获得辐射固化的底涂层; 应用在步骤ii）获得的辐射固化的底漆上，通过选自丝网印刷，柔版印刷和轮转凹版印刷的方法，以标记的形式施用可辐射固化的底漆组合物; 辐射固化所述可辐射固化的顶涂层组合物以便形成辐射固化的外涂层，其中可辐射固化的底涂层组合物和/或可辐射固化的顶涂层组合物包含独立地选自以下的一种或多种机读特征物质： 胆甾醇型液晶颜料，发光化合物，红外线吸收化合物，磁性化合物及其混合物，并且其中辐射固化底涂层的表面能比辐射固化顶涂层的表面能低至少15mN / m。 本发明还涉及相应的安全特征，并且其用于保护安全文件免遭假冒或欺诈。

    Rotogravure printing processes for producing optically variable security features
    4.
    发明授权
    Rotogravure printing processes for producing optically variable security features 有权

    公开(公告)号：US10654307B2

    公开(公告)日：2020-05-19

    申请号：US15029660

    申请日：2014-10-09

    Applicant: SICPA HOLDING SA

    Inventor： Christophe Garnier ,  Lucien Vuilleumier ,  Cecile Pasquier

    IPC: B42D25/364 ,  C09K19/38 ,  B41M3/14 ,  C09K19/58 ,  C09D11/03 ,  B42D25/23 ,  B42D25/29 ,  B42D25/355 ,  B42D25/44 ,  B41F11/02 ,  C09K19/34 ,  B41M1/10 ,  C09K19/04

    Abstract: The present invention is related to the filed of optically variable security elements comprising a region based on a single cured ink comprising a cholesteric liquid crystal polymer, said region having at least two, preferably at least three, patterns exhibiting, at at least one viewing angle, a different CIE (1976) color index parameter and/or a different position of the selective reflection band for protecting security documents against counterfeiting and/or illegal reproduction. In particular, the present invention relates to processes for manufacturing said features, when the processes comprises the steps of a) applying on a substrate by a rotogravure process with the use of a gravure cylinder having at least two, preferably at least three, different engravings a single cholesteric liquid crystal precursor composition, b) heating the applied composition to bring said composition to a cholesteric liquid crystal state, and c) curing the composition so as to form the region based on a single cured ink comprising a cholesteric liquid crystal polymer.

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