A process and retroreflective elements are provided. The process of preparing a retroreflective element includes the steps of: (a) combining a bed of optical elements and one or more core elements comprising a thermoplastic material; and (b) agitating the combination of optical elements and core elements for a sufficient period of time and at a sufficient temperature to coat the optical elements onto the core elements to form retroreflective elements. <IMAGE>
申请公布号
EP1157812(A2)
申请公布日期
2001.11.28
申请号
EP20010116634
申请日期
1996.06.05
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
HACHEY, KATHLEEN A.;STUMP, LARRY K.;BESCUP, TERRANCE L.;KUSILEK, THOMAS, V.