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Heat applied Thermoplastic traffic paints contain a mixture of granular alkyd resin as binder, pigments for color and hiding power, glass beads for reflectivity, additional fillers and additives for enhancing other vital properties. DURA-Therm BLOCK form ( meets AASHTO spec for Block Thermoplastic Traffic Paints ) is formulated using high quality alkyd resin that is very durable, has good adhesion to asphalt and concrete substrates, has excellent bead retention and retro reflectivity and is impervious to the effects of petroleum products like oil, grease, diesel, etc. on road surfaces. This thermoplastic grade is pre melted and then molded in BLOCK form. It is further handled and sold in block form, hence the name. Block thermoplastic is melted and then sprayed or extruded in appropriate striping machines. The block form helps in ease of handling and extends the shelf life of the product.