Coating processes – Coating pavement or the earth – Striping – marking – or increasing reflectivity
Patent
1992-08-12
1995-01-10
Owens, Terry J.
Coating processes
Coating pavement or the earth
Striping, marking, or increasing reflectivity
427199, 427203, 427204, 404 14, 404 20, 428143, 428149, 428206, B05D 502, E01C 1124
Patent
active
053805496
DESCRIPTION:
BRIEF SUMMARY
This invention relates to anti-slip surfaces and especially to methods of providing traffic or other surfaces with anti-slip characteristics.
BACKGROUND OF THE INVENTION
Anti-slip surfaces are required especially in industrial, commercial and other environments where the presence of water, oil or other substances on paths, roadways, passageways, decks, airfield runways and taxiways, or other traffic surfaces may create danger through loss of friction, for example, to persons, vehicles or aircraft.
SUMMARY OF THE INVENTION
It is one of the objects of the present invention to provide a method of providing improved anti-slip traffic or other surfaces.
According to one aspect of the present invention a method of providing a surface with anti-slip characteristic, comprises the steps of applying to the surface a first coating of paint, distributing particles of mineral or other material on the coating before the coating has dried, and then applying a second coating of paint over the particles and the first coating to lock the particles into the first coating with the particles projecting from the second coating.
The paint, which may be applied in liquid or other form and contain fillers and/or pigments, may be based on an alkyd resin and may contain chlorinated rubber. Alternatively, an epoxy-resin based paint may be used.
The said particles may be particles of aluminium oxide, silicon oxide, zirconium or plastics material, or may be granules of rubber or cork.
The same paint may be used for the second coating as for the first, and the paint and the particles may be applied by spray. The particles may, alternatively, be applied by a controlled gravity-feed system or by an electrostatic method.
The method of the present invention may be successfully applied economically and readily to paths, roadways, passageways, decks (for example on ships and oil platforms), helicopter landing pads and airfield runways and taxiways. Furthermore, there is generally no danger caused if the painted surface is damaged through wear, or if for some reason there is breakdown in the bond between paint and surface. Wear or other damage can be very easily repaired simply by re-applying the method of the invention to the relevant region.
According to another aspect of the present invention there is provided a surface having a first coating of paint applied to that surface, particles of mineral or other material distributed in the first coating, and a second coating of paint over the particles and the first coating and locking the particles in the first coating with the particles projecting.
Anti-slip surfaces, and methods of providing them, in accordance with the present invention, will now be described, by way of example, with reference to the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a section illustrative of an anti-slip surface laid in accordance with the present invention;
FIG. 2 is a section illustrative of a combined anti-slip and retro-reflective surface laid in accordance with the present invention;
FIG. 3 shows a helicopter landing pad in accordance with the present invention;
FIG. 4 shows part of an airfield taxiway with inset symbology, laid in accordance with the present invention; and
FIG. 5 is a section through an anti-slip surfacing tile according to the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows a section through a two-coat anti-slip paint system that has been applied to a blacktop (for example, bituminous or tar macadam) or concrete surface of a path, roadway or airfield runway or taxiway, in accordance with the present invention. As an alternative, the traffic surface may be a metal or other deck for helicopter use on a ship or oil rig. The paint used in the method to be described is based on an alkyd resin of medium chain length, containing chlorinated rubber and pigments. As an alternative, it may have an epoxy resin base.
Referring to FIG. 1, paint is applied to the traffic surface 1 after the surface 1 has been swept clear of loose stones a
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