High Index Screen Materials Reflective Glass Beads
Bead properties that are controlled during the manufacturing process include those that are chemical and physical in nature. The chemical and physical properties of beads have a major influence on how well the beads reflect light. These properties include: bead size, refractive index, clarity, roundness.
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The size of a glass bead can affect retroreflectivity, especially under wet conditions. Larger beads have slightly higher retroreflectivity than standard beads under dry conditions. Note that bead size has no effect on refractive index.When markings are wet, beads are often rendered useless because the film of water that covers the marking causes light to scatter before it can enter the bead. This causes the wet markings to be nearly invisible at night. Large beads may be more effective when roads are slightly wet because their higher profile protrudes through the film of water better than small beads. Note that as the thickness of the water film increases, large beads begin to lose their effectiveness as well.
High Index S-Brilliance Reflective Glass Beads
The refractive index (RI) is a function of the chemical makeup of the beads, which is determined by the raw material used to make the bead. The higher the refractive index, the more light is reflected. Most beads used in roadway striping nationwide have a refractive index of 1.50. A bead with a 1.50 refractive index is made from recycled windowpane glass. Beads with higher refractive indices, including 1.65 and 1.90, are made from virgin glass and have a different chemical makeup. Higher refractive index beads are not frequently used because they are more expensive and may be slightly less durable than 1.50 RI beads. Some agencies use a blend of higher and lower refractive index beads.
High Index Screen Materials Glass Beads
Clarity and Roundness Clarity and roundness are the two essential properties that all beads must possess to retroreflect light. The need for transparency and roundness can be explained by examining the path of light as it enters a bead embedded in a marking. The glass bead must be transparent so that light passes through the sphere. Clarity is strongly affected by the type of raw material used. Beads that are less than transparent block a portion of the light from entering.
The rounded surface of the bead causes the light ray to bend
downward to a point below where the bead is embedded in the paint.
Light striking the back of the embedded portion of the bead is reflected
back to the path of entry. Roundness is greatly influenced by the
properties of the blast furnace. Beads that are less than perfectly
round have diminished retroreflective properties.
This kind of glass beads are processed from special glass raw-materials. The refractive index is between 1.57 and 1.60. Its` reflective performance is superior to those glass beads adopted from architectural glass with same roundness and particle size. And the roundness and particle size can be customized according to requirements.
The glass bead can be produced based on the standard of countries or areas, such as EN1423/1424, AASHTO M247, BS6088, JIS R3301 and KS L2521 etc.
ChiYe Glass Bead(Hebei)Co.,Ltd, Which was set up in 1998,is the biggest and specialized supplier of reflective glass beads for road safety.
The company owns 28 glass bead production lines for producing various glass beads with nanual output of 100,000MT.
ChiYe has proceeded the certification of ISO 9001 quality management system and ISO 14001 environment management system.
ChiYe mainly manufactures Drop On Glass Beads , Intermix Glass Beads , Adhesive Glass Beads, Moisture-Proof Glass Beads, Dual-Coated Glass Beads, S-Brialliance Glass Beads, Blasting Glass Beads , Grinding Glass Beads, Twinkling Big Glass Beads, Glass Particles and so on.
Moreover, every kind of glass beads can be produced based on the standard of countries/areas and the requirements of customer, such as EN1423/1424, AASHTO M247, BS6088, JIS R3301,KS L2521 and other Glass Beads for Road Marking.
After perpetual technological innovation and accumulative experiences in years, CHIYE Brand is rated as `well-known trademark` and also has been evaluated as `Chinese Recognized Brand Product` by the Engineering Test Center of the Ministry of Communications of PRC. We have obtained CE certificate in Sept.2005 and KS certificate of Korea in Dec.2006. In 2007 we joined in ATSSA to be its member. Our products are exported to more than 50 countries, such as The United States, Canada, Britain, France, Spain, Denmark, Korea, India and others.
ChiYe located in Langfang city that is in the southeast direction of Beijing and around 50km far. Meanwhile, the city is just 100km far from the important seaport in Northern part of China named Xingang port. Here we have convenient traffic conditions, welcome to visit our factory and procurement.
Our mission: To safe-guard all mankind`s travel.
Our strategy: To be leading manufacturer of road reflective materials.
Our slogan: To stand ChiYe ambition and create world brand.
Welcome to browse our Website: http://www.glassbeadscy.com
ChiYe has been ready to work with you to win the development!
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