| 发明名称 |
ENCLOSED-LENS RETROREFLECTIVE SHEETING HAVING TOUGH WEATHER-RESISTANT, TRANSPARENT COVER FILM |
| 摘要 |
<p>A transparent cover film better protects enclosed-lens retroreflective sheeting and can be applied more economically when it is extruded and is a thermoplastic polymer which has good elongation and minimal elastic memory. Preferred polymers are (a) aliphatic urethanes and (b) copolymers of ethylene or propylene.</p> |
| 申请公布号 |
EP0223565(B1) |
申请公布日期 |
1993.01.13 |
| 申请号 |
EP19860308855 |
申请日期 |
1986.11.13 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
BAILEY,TERRY R.@C/O MINNESOTA MIN. & MANUF. CO.;HAUNSCHILD, DALE H,@C/O MINNESOTA M. & MANUF.CO. |
| 分类号 |
B32B27/00;B32B5/16;B32B7/02;B32B27/08;B32B33/00;E01F9/00;E01F9/04;G02B5/128 |
主分类号 |
B32B27/00 |
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