发明名称 |
Luminous retroreflective sheeting and method for making same |
摘要 |
Luminous retroreflective sheetings have a transparent cover layer, an optical layer disposed beneath the cover layer, and a reflective layer. The optical layer includes a first polymer layer and a monolayer of beads at least partially embedded therein. The reflective layer is disposed proximate a focal plane of the monolayer of beads. The monolayer of beads includes transparent beads that, in combination with the reflective layer, retroreflect incident light. The monolayer also includes light-emitting beads that emit light under the influence of an applied voltage or ultraviolet (UV) radiation. Processes for making such sheetings are also disclosed.
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申请公布号 |
US5988822(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19980195891 |
申请日期 |
1998.11.19 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
ABE, HIDETOSHI;ARAKI, YOSHINORI |
分类号 |
G02B5/128;G09F3/02;G09F13/16;G09F13/20;G09F13/22;(IPC1-7):G02B5/128 |
主分类号 |
G02B5/128 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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