Retroreflective traffic sign and process and apparatus for manufacturing same
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
A method， apparatus for making， and a retroreflective traffic sign consists of a polymeric film having a front face and a rear face， wherein the rear face has a pattern of microprismatic retroreflective elements integrally formed as part of said film; a pattern of cell walls formed of an adhesive-containing polymer defining cells in which the microprismatic retroreflective elements are in the cells; and a substrate is adhered directly to the cell walls formed of the adhesive-containing polymer while leaving an air gap between the microprismatic retroreflective elements and the substrate in the cells.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
