公开(公告)号：WO1997018947A1

公开(公告)日：1997-05-29

申请号：PCT/US1996016529

申请日：1996-10-16

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  GOEB, Siegfried, Rainer ,  HARPER, James, H., C.

IPC: B32B27/08

CPC classification number: B32B27/08 ,  B32B7/12 ,  B32B27/20 ,  B32B27/40 ,  B32B2307/4026 ,  B32B2307/416 ,  B32B2375/00 ,  B32B2405/00 ,  E01F9/512

Abstract: A pavement marking material comprises a flexible base sheet (11) that is conformable to an irregular pavement surface. A durable, wear-resistant polymeric top layer (18) which is discontinuous in two directions is affixed to one surface of the base sheet. The polymeric top layer is discontinuous in both the cross web direction and the down web directions. This discontinuity in two directions is obtained by means of a continuous process such as a rotary screen printing process. A rotary screen printing process is much more efficient if the composition to be coated has an infinite pot life at application temperatures. This infinite pot life is attained through the use of a blocked isocyanate crosslinker. The discontinuous nature in two directions of the polymeric top layer provides for increased initial conformance of the pavement marking to irregular pavement surfaces. The discontinuous nature of the polymeric top layer also reduces elastic tensile stresses which tend to build up in continuous top layers and cause adhesive failure. A plurality of particles, retroreflective microspheres and/or skid-resistant particles, are embedded in and protrude from the non-continuous top layer.

Abstract translation: 路面标记材料包括柔性基片（11），其适合于不规则路面。 在基片的一个表面上固定有沿两个方向不连续的耐用耐磨聚合物顶层（18）。 聚合物顶层在横向横向方向和下腹板方向上是不连续的。 通过连续工艺如旋转丝网印刷工艺获得两个方向的不连续性。 如果要涂覆的组合物在施加温度下具有无限的适用期，则旋转丝网印刷方法更有效。 通过使用封端的异氰酸酯交联剂可获得无限适用期。 在聚合物顶层的两个方向上的不连续性质提供了路面标记对不规则路面表面的初始一致性的增加。 聚合物顶层的不连续性质还降低了弹性拉伸应力，其倾向于在连续的顶层中积累并导致粘合剂失效。 多个颗粒，逆反射微球和/或防滑粒子被嵌入并从非连续顶层突出。