Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
  • E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
  • E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
  • E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
  • E01C23/14—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces for heating or drying foundation, paving, or materials thereon, e.g. paint
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
  • E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
  • E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
  • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
  • E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces

Definitions

• the present invention relates to a method for marking drivable areas with water-based paints, and mobile marking machines that can be used for this purpose.
• Marking with water-based marking colors is particularly problematic. These can be processed like the usual solvent-based paints, for example by spraying, in the cold; however, it takes a relatively long time to dry because of the relatively slow evaporation of the water. The drying time is very much dependent on the weather conditions, such as cold and humidity. There are high costs due to excessively long cut-off times for road traffic. In temperate climates, such paints can rarely be processed with an acceptable drying rate.
• paints applied in this way dry only insignificantly faster and, due to their higher viscosity, generally only adhere poorly to the substrate after cooling. The durability of such markings on the road is therefore severely impaired.
• the present invention was therefore based on the object of demonstrating a marking method by means of which the drying time of water-containing marking inks can be decisively shortened without impairing the adhesive strength of the markings on the substrate.
• the present invention relates to a method for marking passable areas with water-based paints, which in addition to water binders, pigment and filler may contain conventional organic solvents and other auxiliaries, according to known paint application methods, which is characterized in that the area to be marked is immediately in front of the application of the paint is heated with an artificial heat source.
• the areas to be marked should preferably be heated to surface temperatures between 25 and 120, in particular 30 and 90 ° C., or heated to 5 to 100, preferably 20 to 80 ° C. in relation to the ambient temperature.
• those inks are preferably used according to the invention whose volatile organic solvent content is up to 25% by weight, preferably less than 10% by weight.
• the present invention also relates to mobile marking machines for carrying out the method according to the invention.
• the areas to be marked can consist of the asphalt or concrete ceilings that are common in road construction.
• Conventional artificial heat sources can be used for heating.
• Known combustion devices which can be supplied with liquid or gaseous, easily transportable fuels, such as heating oil or propane gas, are preferred.
• heating oil or propane gas are preferred.
• several flames can be connected in series and optionally also side by side and the burner output can be regulated.
• the heat emission from the heat source is expediently limited essentially to the area to be marked by a heat-insulating shield.
• the effectiveness of the heat source can be increased by a heat-reflecting jacket inside the shield.
• the heat source is arranged in such a way that it also simultaneously heats the aqueous marking paint emerging from the paint application device onto the substrate.
• the road marking machines customary for marking paints are suitable for the method according to the invention. However, they preferably contain an additional device which is attached in front of the paint application device in the direction of travel and which contains the artificial heat source.
• aqueous markers can be processed faster and largely independently of the weather conditions, such as the temperature and moisture content of the air. This can reduce the costs of long-term blocking of roads and squares for traffic.
• the color markings obtained by the process according to the invention are notable for improved adhesive strength to the substrate and increased resistance to weather influences, such as rain, persistent wetness, frost and salt water, in particular if the stress is applied shortly after the markings have been applied .
• binders are physically drying polymers which have glass transition temperatures between 10 and 70 ° C. and K values (according to DIN 53 726) between 25 and 90.
• oxidatively drying polycondensates and combinations of these binders are also suitable.
• Suitable binders for the process according to the invention are, for example, aqueous primary or secondary dispersions of copolymers, in particular those which contain copolymers of styrene and (meth) acrylic esters of monoalcohols having 1 to 14, in particular 4 to 8, carbon atoms, preferably styrene / s -Butyl acrylic copolymers, which also have other monomers, such as Acrylic acid, acrylamide and / or methacrylamide can be copolymerized.
• aqueous primary or secondary dispersions of copolymers in particular those which contain copolymers of styrene and (meth) acrylic esters of monoalcohols having 1 to 14, in particular 4 to 8, carbon atoms, preferably styrene / s -Butyl acrylic copolymers, which also have other monomers, such as Acrylic acid, acrylamide and / or methacrylamide can be copolymerized.
• Suitable pigments are those customary for road marking, for example anatase, rutile and chrome yellow.
• the usual fillers are also used as fillers, such as microdolomite, microcalcite, cristobalite flour and diatomaceous earth.
• both the customary volatile solvents such as, for example, toluene, xylene, acetone, isopropanol, methoxypropanol and butyl glycol, and low-volatile solvents which act as plasticizers are suitable.
• auxiliaries that may be present in the paint are plasticizers or film-forming aids, pigment dispersants and wetting agents, water repellents, thickening and anti-settling agents, crosslinking agents or hardeners.
• a marking paint prepared in a known manner from 200 parts of a 50% aqueous commercial dispersion based on a styrene-n-butyl acrylate copolymer with a minimum film-forming temperature of about 20 ° C. and 110 parts of rutile, 150 parts of microcalcite and 150 parts of crystallobalite flour a wet layer thickness of 600 g / m 2 on smoothed asphalt pavement, the surface temperature of which is 23 ° C, at 23 ° C and 65% rel. Humidity applied.
• the air movement over the color marking is approx. 0.3 m / s.
• the marking takes about 100 minutes to dry. Afterwards, after the rolling over of a 2.5 kg, 10 mm wide, round rubber tire, there is no longer any clear impression on the marking.
• the test is carried out as in Comparative Example A. Before applying the paint, however, the surface is warmed up to approx. 60 ° C with a gas-heated burner. This measure reduces the drying time to around 5 minutes. The surface temperature of the marking is then approx. 30 ° C.
• the marking conditions of comparative example B are changed to about 70 ° C. by previously heating the substrate. This shortens the drying time to approx. 5 to 10 minutes.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Road Signs Or Road Markings (AREA)
• Road Repair (AREA)
• Paints Or Removers (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6236072

Family Applications (1)

Country Status (2)

Citations (12)

• 1984
  • 1984-05-17 DE DE19843418272 patent/DE3418272A1/de not_active Withdrawn
• 1985
  • 1985-04-23 EP EP85104914A patent/EP0163901A3/fr not_active Withdrawn

Patent Citations (12)

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