A retroreflective element which may be used in pavement markings comprising a core having (a) a central layer having first and second major surfaces and at least one vertical surface, (b) a barrier layer applied to the first major surface, and (c) a barrier layer applied to the second major surface; and a plurality of optical elements embedded in the vertical surface(s) of the central layer.
申请公布号
WO9728470(A1)
申请公布日期
1997.08.07
申请号
WO1996US01583
申请日期
1996.02.05
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY;PALAZZOTTO, MICHAEL, C.;MAHONEY, WAYNE, S.