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    MULTILAYER SURFACING FILMS
    1.
    发明公开
    MULTILAYER SURFACING FILMS 审中-公开

    公开(公告)号：US20240301239A1

    公开(公告)日：2024-09-12

    申请号：US18289265

    申请日：2022-05-09

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Yongshang Lu ,  Charlie Chia-Tie Ho ,  Timothy J. Brookshaw ,  Jay M. Jennen ,  Todd G. Pett ,  Tong Wei ,  David P. Siglin

    IPC分类号： C09D175/14 ,  C08G18/62

    CPC分类号： C09D175/14 ,  C08G18/6225 ,  C08G2150/00

    摘要： Provided is a surfacing film that includes a plurality of layers. The layers include a first clear coat layer made from a crosslinked polyurethane that is a reaction product of a reactive mixture including an isocyanate and a polyol containing a styrene repeat unit and a hydroxyl-containing (meth)acrylate repeat unit. The surfacing film further includes a bulk layer made from a thermoplastic polyurethane and an adhesive layer. Optionally, the surfacing film includes second clear coat layer, which can be made from a polyurethane that is at least partially crosslinked. The resulting surfacing film can display high stain resistance, high peel strength, superior scratch resistance and self-healing properties.

    Multilayer film including hidden fluorescent features
    3.
    发明授权
    Multilayer film including hidden fluorescent features 有权

    公开(公告)号：US10914878B2

    公开(公告)日：2021-02-09

    申请号：US16464123

    申请日：2017-12-12

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Timothy J. Hebrink ,  Todd G. Pett

    IPC分类号： G02B5/26 ,  B42D25/382 ,  B42D25/387 ,  G01N21/64 ,  G02B5/20 ,  G02B5/08 ,  G02B5/28 ,  B42D25/328 ,  B42D25/355 ,  B42D25/23 ,  B42D25/28 ,  B42D25/29

    摘要： Various embodiments disclosed relate to multilayer films including hidden fluorescent features. The present disclosure includes a multilayer optical film including an isotropic multilayer optical film having first and second opposed major surfaces. The isotropic multilayer optical film reflects at least 50% of a light that is at least one of ultraviolet light or visible light, having an incident angle less than a cutoff angle from normal to the first major surface of the isotropic multilayer optical film, wherein the cutoff angle is in a range from 10° to 70°. The isotropic multilayer optical film allows at least 50% of the light having an incident angle of more than the cutoff angle from normal to the first major surface of the isotropic multilayer optical film to pass through the isotropic multilayer optical film. The isotropic multilayer optical film includes a marking on the second major surface of the isotropic multilayer optical film, the marking including at least one fluorescent compound. Various embodiments of multilayer optical films described herein are useful, for example, as anti-counterfeiting features, such as in identification documents or cards, currency, labels for pharmaceuticals or other high value products, or financial cards.

    MULTILAYER FILM INCLUDING HIDDEN FLUORESCENT FEATURES
    9.
    发明申请
    MULTILAYER FILM INCLUDING HIDDEN FLUORESCENT FEATURES 审中-公开

    公开(公告)号：US20190302333A1

    公开(公告)日：2019-10-03

    申请号：US16464123

    申请日：2017-12-12

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Timothy J. Hebrink ,  Todd G. Pett

    IPC分类号： G02B5/26 ,  G02B5/20 ,  B42D25/387 ,  B42D25/382 ,  G01N21/64

    摘要： Various embodiments disclosed relate to multilayer films including hidden fluorescent features. The present disclosure includes a multilayer optical film including an isotropic multilayer optical film having first and second opposed major surfaces. The isotropic multilayer optical film reflects at least 50% of a light that is at least one of ultraviolet light or visible light, having an incident angle less than a cutoff angle from normal to the first major surface of the isotropic multilayer optical film, wherein the cutoff angle is in a range from 10° to 70°. The isotropic multilayer optical film allows at least 50% of the light having an incident angle of more than the cutoff angle from normal to the first major surface of the isotropic multilayer optical film to pass through the isotropic multilayer optical film. The isotropic multilayer optical film includes a marking on the second major surface of the isotropic multilayer optical film, the marking including at least one fluorescent compound. Various embodiments of multilayer optical films described herein are useful, for example, as anti-counterfeiting features, such as in identification documents or cards, currency, labels for pharmaceuticals or other high value products, or financial cards.