Pavement markers with silicone adhesive

U.S. Patent Number: 5391015

Abstract: A pavement marker includes an object, such as a sheet or a raised pavement marker body, having an upper surface useful as a pavement marking indicium and a lower surface, and a bottom layer of polyorganosiloxane pressure-sensitive adhesive in intimate contact with the lower surface. A pressure-sensitive adhesive laminate system for attaching a pavement marker to a roadway surface includes a first layer of pressure-sensitive adhesive material,such as a polyorganosiloxane adhesive, a second layer of pressure-sensitive adhesive material, and a layer of deformable material interposed between the first and second pressure-sensitive adhesive layers, wherein the deformable material of the interposed layer is characterized by high cohesive (shear) strength. A method of marking a pavement having a temperature below 15.degree. C. includes providing a pavement marker of the invention and contacting the pavement with the pressure-sensitive adhesive and applying pressure to the top layer to bond the pavement marking material to the pavement.

Inventors: Kaczmarczik; James M. (Saint Paul, MN), Lasch; James E. (Oakdale, MN), Jacobs; Gregory F. (Woodbury, MN), May; David C. (Roberts, WI), Willie; Daniel J. (Minneapolis, MN)

Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)

Application Number: 08/119,876

Issued: 1995-02-21

Expired: 2007-02-21

Classes: 404/14 ; 404/16

Field of search: 404/12,14,16 362/153.1 428/343,352-353

Click the image above to view patent images at uspto.gov within a frame.

Click here for the fulltext page on uspto.gov within a frame.