Abstract:
Disclosed are improved snowplowable pavement markers (130,230) held fixedly to a roadway (180,280) by adhesive (185,285). The markers (130,230) include a holder (131,231 ) and at least one transversely arranged reflector (32) to retroreflect incident light from headlights of approaching vehicles. The holders (131,231 ) have a pocket (155,233) for supporting the reflector (32). One or more through openings (156,250) having angled sides (157,251 ) are defined in the bottom of the pocket (155,233) so that when the marker (131,231 ) is installed in an adhesive bed on the pavement (180,280), adhesive (185,285) flows into contact with the holder (131,231 ) and the bottom of the reflector (32) to simultaneously affix both to the pavement (180,280). Reflectors (32) may be replaced by simply chiseling an old reflector out of the holder pocket (155,233) to create a flat bottom surface in the pocket to which a bead of mastic adhesive (185,285) is applied and a new reflector (32) is subsequently installed. This new marker construction applies to both raised and recessed snowplowable pavement markers.
Abstract:
The present disclosure generally relates to non-conformable thermoplastic pavement marking tapes comprising a backing and an adhesive layer adjacent to the backing. In some embodiments, the backing includes an ionic copolymer. In other embodiments, the non-conformable backing has an inelastic deformation of less than 10% at 25°C. In some embodiments, the pavement marking tape is heat-moldable.
Abstract:
A pavement marking composition comprises an isocyanate-containing component and an amine-containing component. At least one of the components comprises plasticizer and at least one of the components comprises filler. The composition comprises about 5 wt. % or more plasticizer and is substantially free of polyaspartic ester amines.
Abstract:
The thermoplastic pavements markers and pavement marking compositions of the present application include a miscible blend of ethylene acrylic acid polymers and have a crystallization onset temperature observed upon cooling of greater than 65.6 °C (150 °F).
Abstract:
Disclosed is an alkyd resin-based pre-manufactured thermoplastic airport runway signage that is applied in relatively large sections onto an airport runway. The pre-manufactured preformed thermoplastic formed as a continuous sheet and wound onto a take-up spool. The runway surface is prepared with a CCS epoxy primer and the preformed thermoplastic is unwound from the take-up spool and positioned onto the runway surface. When the pre-manufactured thermoplastic signage is in a desired location it is initially rolled conforming to the runway surface. Heat is applied to the rolled surface to a preferred temperature with an infra-red (IR) heater to melt and adhere the pre-manufactured thermoplastic signage into the runway surface.
Abstract:
A horizontal road sign device (10) comprises a base body (12) of a substantially planar type, able to be associated with a roadway (14). The base body (12) is made of a rubber based material and has an upper surface (20), on which motor vehicles are able to pass. The signaling device (10) comprises one or more signaling elements (16) able to determine a desired visual sign, which are at least partly incorporated into the upper surface (20) of the base body (12), having at least a visible signaling surface (18, 19, 21) facing toward the outside of the base body (12).
Abstract:
A temporary marking material comprises a thermally-expansible layer containing a binder, a pigment and thermally-expansible microballs, and a pavement marker comprises the temporary marking material. Both the temporary marking material and the pavement maker hardly peel off or move during the use, and when they become unnecessary, they can be easily peeled off by heating from the structure in a short time by virtue of the expanded microballs. When the temporary marking material is in practical use, the thermally-expansible layer is disposed on the surface of a structure. The pavement marker is disposed on the pavement as part of a surface of the structure.
Abstract:
A method of making a pavement marker including the steps of forming an array of pavement elements in a predefined pattern interconnected by a carrier web. A frangible connection is formed between a plurality of the pavement elements and the carrier web. After the array of pavement elements is applied to the pavement surface using an adhesive, a portion of the carrier web surrounding the pavement elements is removed or allowed to substantially deteriorate and dissipate, leaving an array of discrete pavement elements.
Abstract:
Composite pavement markings with improved wear resistance and other advantages are disclosed. The composite pavement markings typically include a unitary retroreflective article attached to a base pavement marking. With the composite construction, different portions of the pavement marking are provided at different heights. The taller portions of the pavement marking may preferably offer some protection to the shorter portions from wear caused by vehicle traffic and/or snowplow blades. By combining two different retroreflective pavement markings to form the composite pavement markings of the present invention, a combination of features and properties may be obtained that is provided by neither of the pavement markings alone. Methods of manufacturing composite pavement markings are also disclosed.