| 摘要 |
The invention is related to a retroreflective film having flat areas and raised areas, the article comprising a substrate and a retroreflective film having a rear surface adhered to a front surface of the substrate, wherein:
the substrate has a flat area corresponding to the flat area and raised areas corresponding to the raised areas;
the retroreflective film has a flat area corresponding to the flat area and raised areas corresponding to the raised areas; the raised areas have a height in the range of about 0.3 mm to about 3 mm relative to the flat areas,
the retroreflective film comprises a prismatic layer having retroreflective prism elements;
the retroreflective film comprises a reflective layer positioned adjacent the rear surface of the prismatic layer and a cover layer, the cover layer is the frontmost layer positioned in front of the prismatic layer;
the retroreflective film has an elongation of at least 20%; and
the substrate has a visible light transmission of less than 30% and/or wherein a layer of the film positioned rear of the prismatic layer has a visible light transmission of less than 30% and a respective method of manufacturing. |
