Concrete Primer For Thermoplastic Paint, Packaging Type : Can

Shaf Sunrise Line Mark Pvt. Ltd. has a specially designed primer for application of Thermoplastic road marking material on concrete and old bitumen surface.

• The primer ensures excellent adhesion of the thermoplastic strips onto concrete or old bitumen, thereby increasing the life of road marking.
• Being quick drying and easy to apply, no significant time under-runs are expected owing to primer application.
• Colour - clear to translucent.

Thermoplastic road marking paint, also called hot melt marking paint, is a powder base paint. When applied as road surface markings, need to heat upto 200 °C (392 °F), after which it is sprayed on the road surface. The coating then becomes a line after cooling. This paint is thick coating, wear-resisting, bright and reflective. In order to increase the antiskid performance of the line, thermoplastic paint has added reflective glass beads.
The product is made up of selective use of plastic sized binders, reflective glass beads, extenders and pigments.
General Characteristics

• Quick drying: The thermoplastic road marking paint should dry in a short time and no matter what climate it is. However the drying process is faster in winter than summer. It’s better to reduce the molten state temperature of the paint to cut down the hardening time.
• High durability: Compared to normal road paints, thermoplastic is hard wearing and is highly durable under all-weather all traffic conditions, its average life span is two to three years under normal traffic condition.
• Excellent adhesion: The thermoplastic road marking paint has strong connection with roads, it’s hard to break or peel off the paint from road surface. Coating agent is pre-painted to enhance the adhesion between thermoplastic road coatings and roads, that’s why their connection is so firm.
• Visual visibility: Whether it is day or night, thermoplastic road marking paint should be clear and visible within enough visual distance. It’s very easy to handle this in daytime since the visibility depends on the quality of the paint. But the visibility in the night depends on the reflective glass beads distribution and the temperature control during construction. For immediate effect, high Ratro reflective drop-on beads are recommended at the rate of 250 gm/sq.m.
• High skid resistance: Aggregate material of selected sizes are used in the product mixture and tested thoroughly to provide maximum required skid resistance for better road safety.
• High Softening Point: A good chemical formulation combined with years of Research and Development has yielded a product of exceptional stability against the effects of UV rays and harsh tropical climate conditions.

Methodology for Application of Thermoplastic Road Marking

• Scope: This methodology is applicable for line marking on asphalt & concrete surface by using Thermoplastic Road Marking Material using Manual, Semi-automatic and Automatic Road Marking Equipment with attachment of Glass Bead Dispenser to spray Glass Beads.
• Machine: The work will be carried out by using fully automatic, semi-automatic or manual applicator machine. Pre-meltors for preparation of material will also be used to speed up the work and provide uniform pre-heating of the material, if necessary. The equipment used to lay hot applied thermoplastic material will be able to provide continuous uniform heating to temperatures of upto 200C, mixing and agitation of the material.

Applications

• The Thermoplastic road marking will be executed by using Fully Automatic Machine or Semi-Automatic Machine.
• The thermoplastic material will be applied hot by Screening or Extrusion process.
• All surfaces to be marked will be thoroughly cleaned of all dust, dirt, grease, oil and all other foreign material before application of the marking.
• The lines through which the marking is to be done will be pre-marked by using distemper or any other pre-marking material.
• The desired settings for the markings (broken line, continuous lines etc.) will be made in the control panel of Automatic machine or the relevant size of screed box will be fixed to the applicator.
• The glass beads for super imposition on the markings will also be put into its container and settings to be adjusted at 250 grams per sqmtr. The glass beads applied to the surface of the complete stripe shall be applied by an automatic bead dispenser or by bead dispenser operating on gravity.
• The molten material will be allowed to pass into the screed box of the desired size (10 cms, 15 cms etc.) or adjusted in the automatic machine’s extruder unit. The screed box or the extruder unit will also be heated using the built in heaters.
• The machine will be driven through the pre-marked line and the screed box or extruder shutter is opened which will allow the material to flow to the surface and lay a uniform film of 2.5mm thick of thermoplastic material.
• Traffic Cones, Safety Jackets will be provided to divert the traffic from the main carriageway to the next lane / road to save the marking from the moving vehicular traffic. After the 30 – 60 min. of drying, road can be opened to traffic.
• For working on Portland Cement Concrete surface, a sealing primer from Any company shall be applied to the pavement in advance of placing of the strips to ensure proper bonding of the compound. The primer will be brush / spray machine applied @ 4-5 sqm per ltr.
• For marking of pedestrian crossings, directional arrows, chevrons etc. only manual applicator is used with 50 cms screed box and stencil wherever necessary.
• A team of well-trained staff would be executing the work strictly as per IRC-35 and MORTH specifications.