Pavement marking pattern and method
The invention pertains to pavement marking patterns and the application thereof to roads, streets, walkways and the like. Various pattern marking designs replicate bricks, cobblestones, horizontal signage, logos and other components. The marking patterns are composed of two or more independent sections, the first section is a grid representing for example, the mortar joints in a brick wall. The second sections or inserts, for example represent bricks which are contained within the grid. As the first and second sections are generally formed from different colored, preferably thermoplastic materials, a hot melt adhesive spray is utilized on the bottom surface of the marking pattern bridging the intersections between the first and second sections, maintaining the integrity of the marking pattern for convenience during handling and application to a substrate. Preferably the hot melt spray adhesive has approximately the same softening point range as the pattern sections for heat treatment during application.
1. A method of applying a pavement marking pattern having contiguous sections to a substrate comprising the steps of:
a) forming a pavement marking pattern consisting essentially of: an independent thermoplastic grid section and a plurality of independent thermoplastic insert sections, wherein each of said plurality of insert sections resides within said grid section and said plurality of insert sections are coplanar, and wherein said grid section and said plurality of insert sections both comprise a planar top surface and planar bottom surface that are coplanar to each other,
b) adhering said plurality of grid sections such that said grid sections are in direct contact with each of said plurality of insert sections thereby forming intersections between said grid section and each of said plurality of insert sections,
c) adhering said pavement marking pattern to said substrate by spraying a polyamide adhesive backing layer on said coplanar bottom surface in a circular or spiral configuration crossing said intersections, wherein said sprayed polyamide adhesive has a softening point of between 105 and 120 degrees C. and wherein said adhesive is applied at a temperature above said adhesive's softening point such that said adhesive covers 5-90 percent of said coplanar bottom surface.
2. The method of claim 1 wherein adhering the marking pattern to the substrate comprises the step of heating the marking pattern.
3. A method of making a pre-bonded pavement marking pattern comprising:
a) providing an independent thermoplastic grid section and a plurality of independent thermoplastic insert sections, wherein each of said plurality of insert sections resides within said grid section and said plurality of insert sections are coplanar, and wherein said grid section and said plurality of insert sections both comprise a planar top surface and planar bottom surface that are coplanar to each other, adhering the plurality of grid sections such that said grid sections are in direct contact with each of said plurality of insert sections thereby forming intersections between said grid section and each of said plurality of insert sections, and spraying a polyamide adhesive backing layer on said coplanar bottom surface in a circular or spiral configuration crossing said intersections, wherein said sprayed polyamide adhesive has a softening point of between 105and 120 degrees C. and wherein said adhesive is applied at a temperature above said adhesive's softening point such that said adhesive covers 5-90 percent of said coplanar bottom surface.