NFTech - Nanofiber Coating
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VPORE Nanofiber Windows Filter
Fine Dust
• Definition: Particular Mater(PM) in the air
PM10(Particle size 10um below): Dust, Pollen, Fungus
PM2.5(Particle size 2.5um below): combustion particle, organic compound, Yellow dust
PM10(Particle size 10um below): Dust, Pollen, Fungus
PM2.5(Particle size 2.5um below): combustion particle, organic compound, Yellow dust
•Source: Coal-Fired Power Plant, Factory smoke, Vehicle emissions, Construction Site
•Component: sulfate(SOX), nitrate(NOX), Heavy Metal, Carbon, Soot, Pollen, Yellow dust
Risk of Fine Dust (Ref: http://s2.sinaimg.cn/middle/929ab0a6gb7a43c000cd1&690)
•respiratory system organ(respiratory tract, Lung, heart and blood system)
•In case of the elderly, infants, pregnant women, the fetus, it is more dangerous
China fine dust emission
(ref: http://aqicn.org/map/shanghai/kr/#@g/30.2408/121.5747/5z, 2016-10-17)
(ref: http://aqicn.org/map/shanghai/kr/#@g/30.2408/121.5747/5z, 2016-10-17)
Imitation of normal insect screen
• Structure: AL Mesh, PET Mesh, PVC Mesh, SUS Mesh, High density Mesh,
3* Company Windows Filter, T* Company Fluoro coated PET Mesh
3* Company Windows Filter, T* Company Fluoro coated PET Mesh
• Pore: 500-1000um (32Mesh = pore 0.5mm)
• Air Permeability: Good
• Dust arrest: Big pore cause the penetration of fine dust, raindrop, yellow dust,
small insect, pollen in the high humidity and air flow
(ASHRAE 52.1 Mass, Air 1m/s, 50%-60% average)
Limitation of electrostatic filtration function
small insect, pollen in the high humidity and air flow
(ASHRAE 52.1 Mass, Air 1m/s, 50%-60% average)
Limitation of electrostatic filtration function
• Normal insect screen allow fine dust penetrates thru normal insect screen
in the big city of China, Korea, Indo (Seoul, Beijing, Lanzhou, Delhi etc.)
in the big city of China, Korea, Indo (Seoul, Beijing, Lanzhou, Delhi etc.)
• Seasonal pollen, insect, raindrop penetrate thru insect screen
• Construction fine dust penetrate thru insect screen
Needs of fine dust arrest function at windows filter
• In case of closing window, no ventilation
• Need high fine dust arrest function (over 50%)
• Mechanical and electrostatic dust arrest function needs even if the humidity is very high
• Below 30um pore size need for fine dust separation
• Need more than 2 years durable as conventional insect screens
• Visibility thru the windows
• Needs blocking raindrop penetration
• Dust particles only on the surface and easy cleaning
• Easy installation
Structure of nanofiber windows filter
• Coating 200-500nm reticular nanofiber on the normal insect screen => Visibility
• Nanofiber crosslinked with special chemical fiber bonding => Durability
• Coating material is hydrophobic and water repellent => blocking raindrop inflow
• 10-30um Pore size of reticular nanofiber => Improved dust arrest rate
•Higher dust arrest, lower air permeability => Inverse relationship
Nanofiber Windows Filter Typical features (Depending on the type)
• Dust Arrest PM2.5, PM10 80% or more (ASHRAE 52.1 Mass, 1m/s)
• Fine dust collected by electrostatic forces and mechanical structure
(Dust arrest function works even if the humidity is very high and electrostatic is very low)
(Dust arrest function works even if the humidity is very high and electrostatic is very low)
• Air permeability 250-300cm3/cm2/s (ASTM D 737@38cm2, 125Pa) for Natural ventilation
• Pollen arrest 99%
• Insect arrest 99%
• Raindrop arrest and auto cleaning
• Cleaning with water spray (Reticular filter structure not damaged)
• Roll screening possibility without delamination of nanofiber filter layer
Structure of nanofiber windows filter
• Mesh + Hydrophobic reticular nanofiber + Hydrophobic reticular adhesive nanofiber + Mesh
Width: 1500mm