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    • 5. 发明申请
    • SEMI-TRANSPARENT RETROREFLECTIVE SHEET AND USE THEREOF TO MAKE A BACKLIT LICENSE PLATE
    • 半透明反射片及其使用制作背板牌照
    • WO2007075518A1
    • 2007-07-05
    • PCT/US2006/048147
    • 2006-12-18
    • 3M INNOVATIVE PROPERTIES COMPANYFRISCH, Ruediger, T.JOST, Michael
    • FRISCH, Ruediger, T.JOST, Michael
    • G02B5/128B60R13/10
    • G02B5/128B60R13/10Y10T156/1052Y10T428/24893
    • The present invention provides a semi-transparent retroreflective material having a retroreflective side (16) and an opposite rear side (17), the retroreflective material having a regular or irregular two dimensional pattern of transparent and opaque areas, said retroreflective material comprising a layer of transparent microspheres (20) and a reflective layer located functionally behind said layer of transparent microspheres, said reflective layer comprising a regular or irregular two dimensional pattern of metal areas (11) of contiguous metal and open areas (12) having substantially no metal, wherein open areas (12) of said reflective layer correspond to transparent areas of said retroreflective material and metal areas (11) of said reflective layer correspond to opaque areas of said retroreflective material and wherein said transparent microspheres (20) are present in said transparent and opaque areas and wherein said transparent areas comprise at least 5% of the total surface of said retroreflective material on said retroreflective side (16).
    • 本发明提供一种具有回射侧(16)和相对的后侧(17)的半透明回射材料,所述回射材料具有透明和不透明区域的规则或不规则的二维图案,所述回射材料包括 透明微球体(20)和功能上位于所述透明微球层之后的反射层,所述反射层包括具有基本上没有金属的连续金属和开放区域(12)的金属区域(11)的规则或不规则二维图案,其中 所述反射层的开放区域(12)对应于所述回射材料的透明区域,并且所述反射层的金属区域(11)对应于所述回射材料的不透明区域,并且其中所述透明微球体(20)存在于所述透明和不透明 区域,其中所述透明区域包括总表面的至少5% 在所述回射侧(16)上的所述回射反射材料。