Roadmarking glass beads

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Trade name

Starbead® Roadmarking

Description

EN BA6088 Starbead® Roadmarking Beads are solid, spherical glass beads for use with thermosplastic roadmarking materials and traffic paint.  BS6088 standard:  Solid glass  beads for use with roadmarking compounds, Class A and Class B are high quality glass microspheres resulting from the specialized processing of selected glass cullet.

Application

Starbead® standard glass beads are a major factor in increasing road safety in an economical manner.  Thanks to the beads' retro-reflective action at night, a vehicle's headlight beam is returned to the driver's eye.  The microspheres not only multiply the visibility of the road markings at night, but also increase the marking's durability in general.  Starbead® glass beads are used as a drop-on agent and as premix beads for roadmarking materials.

Advantages

  • Coated - H:  Higher reflectivity than uncoated.   Therefore best suited to use on high rainfall highway roads.
  • Uncoated - SP:  Increase the visibility of traffic lines /road markings especially at night.
  • Available in various sizes suitable for water based / solvent based road marking paints and thermoplastic material.
  • Can be used in a drop on application or premixed with road marking paint or thermoplastic.
  • Chemically inert and environmentally friendly.
  • Specifically suited for thermoplastic application.  Larger beads will increase reflectivity.

Technical data

  • Hardness: 6 - 7 Moh scale
  • Specific weight: +/- 2.5g/cm3
  • Bulk weight: +/- 1.6 kg / l
  • Free silica: None
  • Shape: Round
  • Reflectivity: Nd = 1.5 for coated and uncoated
  • Storage: Dry and Sheltered
  • Packaging: 25kg bags

Typical chemical analysis

  • Si02: 72.55% (No free silica)
  • Al203: 2.08%
  • K2O: 0.88%
  • Na2O: 13.78%
  • CaO: 7.02%
  • Fe2O3: 0.18%
  • MgO: 3.02%

Sieving range

Grade: 150-850H,  Size range in microns:  > 850 - 0%
                                                             600-850 - 17.4%
                                                             300-600 - 59%
                                                             180-300 - 21.5%
                                                          < 180 - 2.1%

Grade: 150-850SP, Size range in microns:  >850-0%
                                                             600-850 - 17.4%
                                                             300-600 - 59%
                                                             180-300 - 21.5%
                                                           <180-2.1%

Grade: 250-1200SP, Size range in microns: >1200-0%
                                                             850-1200 - 4.5%
                                                             850-425 - 74.3%
                                                             425-300 - 17.9%
                                                           <300-3.3%