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发明公开
CN109996846A 多色激光标记方法 无效 - 撤回

多色激光标记方法
摘要：
公开了一种可激光标记物品，其包含能够在暴露于UV辐射时形成颜色的第一可激光标记层和能够在暴露于IR辐射时形成颜色的第二和任选的第三可激光标记层，其特征在于所述第二或第三可激光标记层包含特定的聚甲炔红外辐射吸收染料(IR染料)。还公开了一种彩色激光标记方法，其中在暴露于UV辐射时形成第一颜色并在暴露于IR辐射时形成第二和任选的第三颜色。
摘要（英）：

A laser markable article comprising a first laser markable layer capable of forming a colour upon exposure to UV radiation, a second and optionally a third laser markable layer capable of forming a colour upon exposure to IR radiation, characterized in that the second or third laser markable layer comprises a specific polymethine infrared radiation absorbing dye (IR dye). Also a colour laser marking method is disclosed wherein a first colour is formed upon exposure to UV radiation and a second and optionally a third colour upon exposure to IR radiation.

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