发明名称 |
Light emitting diode signs and translucent plastic sheets used therein |
摘要 |
<p>Disclosed is a polished translucent co-extruded sheet having utility as a light diffusing protective cover or sign face for light emitting diode (LED) light sources and other purposes. The sheet is comprised of (a) a particle layer containing particles having a mean particle size of about 4 to 100 microns and having a particle size distribution of between 1-110 microns, at a loading of 1 to 60% melt blended with a thermoplastic matrix, wherein the particle and matrix have refractive indices that differ by greater than 0.001 units of each other when measured in conformance with ASTM D 542; and (b) at least one substrate layer comprised of thermoplastic compositions, wherein the substrates have a refractive index within 0.2 units of the refractive index of the particle layer matrix when measured in conformance with ASTM D 542.</p> |
申请公布号 |
EP1369224(A1) |
申请公布日期 |
2003.12.10 |
申请号 |
EP20030011341 |
申请日期 |
2003.05.19 |
申请人 |
ATOFINA |
发明人 |
REILLY, JACK JOSEPH;KEATING, PAUL JOSEPH;DIRKX, RYAN RICHARD |
分类号 |
B32B5/16;B32B7/02;C09K17/52;G09F9/33;G09F13/12;H05B33/00;(IPC1-7):B32B7/02;G09F13/04 |
主分类号 |
B32B5/16 |
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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