Preformed thermoplastic pavement marking and method utilizing large aggregate for improved long term skid resistance and reduced tire tracking
AssigneeEnnis-Flint, Inc.
InventorsRobert W. Greer, Simon Yakopson
Life of this patent
Estimating the term…
Abstract
The present disclosure describes a preformed or in some cases a hot applied thermoplastic marking composition comprising a planar top surface portion and a planar bottom surface portion that are coplanar to each other, wherein said bottom surface portion is directly applied to a substrate via application of heat or pressure or both heat and pressure and wherein said top surface portion comprises an intermix that exits throughout said thermoplastic composition and includes large grit size aggregate in the range of about 8 to about 20 mesh or grit size, thereby reducing or eliminating tire tracking while also improving long-term skid resistance.
Claims27
A preformed thermoplastic marking comprising:
- a plurality of thermoplastic sections including planar top surfaces, planar bottom surfaces, and an adhesive on at least a portion of said bottom surfaces,
- wherein said planar top surfaces of each of said plurality of thermoplastic sections comprise features representing a pattern of said thermoplastic sections,
- wherein said features comprise alphanumeric characters, symbols, or combinations thereof,
- wherein said plurality of thermoplastic sections comprise 18.8 to 20 weight percent of a binder comprising an alkyd resin, the alkyd resin comprising a polyamide resin, a modified rosin resin, a phthalate plasticizer, and a polyethylene (PE) wax, the alkyd resin including a higher weight percentage of the phthalate plasticizer than the PE wax,
- wherein said plurality of thermoplastic sections comprise light reflective beads embedded within their surface,
- wherein the light reflective beads comprise glass, and
- wherein said plurality of thermoplastic sections further comprise an indented visual heating indicator located on the planar top surface of the thermoplastic sections.
A method of affixing a preformed thermoplastic marking to a substrate comprising:
- selecting a plurality of preformed thermoplastic sections, said thermoplastic sections comprising:
- planar top surfaces and planar bottom surfaces, the bottom surfaces of the plurality of thermoplastic sections having an adhesive on at least a portion of said bottom surfaces;
- said planar top surfaces of each of said plurality of thermoplastic sections including features comprising alphanumeric characters, symbols, or combinations thereof;
- said plurality of thermoplastic sections comprise 18.8 to 20 weight percent of a binder comprising an alkyd resin, the alkyd resin comprising a polyamide resin, a modified rosin resin, a phthalate plasticizer, and a polyethylene (PE) wax, the alkyd resin including a higher weight percentage of the phthalate plasticizer than the PE wax,
- said plurality of thermoplastic sections having embedded within their surface light reflective beads that comprise at least one of glass, ceramic, corundum, or crushed glass;
- said planar top surfaces of each of said plurality of thermoplastic sections further including an indented visual heating indicator;
- identifying the features located within the planar top surfaces of each of the thermoplastic sections, the sequential features representing a pattern;
- arranging the thermoplastic sections on a substrate in the pattern indicated by the features on the planar top surfaces;
- and
- applying heat to the planar top surfaces of said plurality of thermoplastic sections monitoring said visual heating indicator until the bottom surfaces of the thermoplastic sections adheres to the substrate.
Dependencies are inferred from the claim text.