Rigmah® Glass

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Inspirational Glass Technology
Rigmah® Glass Coporation

Rigmah®-AR

Rigmah®-ARSelf-cleaning Glass

Rigmah® -AR self-cleaning Glass

  • Clear day: Anti-reflection function
  • Rainy day
  • Organic ink, oil paint, and water spray test
  • The results of the organic ink, oil paint, and water spray test shows more than 250% better cleaning than conventional glass.
Nanotechnology application
Technology Name Details
Dispersion Technology Nano-ceramic particle crystal and content optimization
Binder, dispersant, and additive performance optimization
Development of additives to improve the stability of nanomaterials
Manufacturing of coating solution Dispersantment technology and secondary particle size adjustment technology
Nanomaterials and solvent adjustment: Combination for the coating process
Binder adjustment technology for heat or UV curing
Coating process Coating film uniformity and linearity processing technolog
Thin-film density increase technology: Physical treatment of the substrate
SlitCoater process for manufacturing wet thin film-coated glass
Coating process Fast and accurate drying hardening using IR
Development of binder sintering technology using microwave or IR
Characteristics of coated glass with applied nanotechnology
  • Easy cleaning with water
  • Prevention of fog and condensation on the hydrophilic coated layer
  • 100% nano ceramic hydrophilic coated layer (contact angle 12')
  • Joining process and thermal enhancement (750℃)
  • Large area wet coating (2,438mm*3,048mm)
Application
  • Architectural exterior material
  • Transparent soundproof wall
  • Glass for automobile
  • Beverage showcase (prevention of condensation)
  • Display cover glass for outdoors
Rigmah®-AR production specification
Product Thickness Max. Size
Rigmah®-S 3, 4, 5, 6, 8, 10mm 2,438 X 3,048(mm)

Optical performance of Rigmah®-AR single-sheet glass

Type Conventional glass RIGMAH®-ARS contamination preventive coated glass
Case
Specifications 5T 5T Rigmah-AR 5T Rigmah-AR(Both sides)
Conventional glass T VIS(%) 89 90.7 92.6
R VIS(%) 8 5.26 3.72
Low iron glass T VIS(%) 91 92.7 94.7
R VIS(%) 8 5.26 3.71
Remarks 5T 5T Rigmah-AR 5T Rigmah-AR(Both sides)
About 1.7% improvement in transmittance for Rigmah-AR single side coating to 5T conventional glass and about 3.4% increase when double-side coating

Rigmah®-AR performance indicator and measurement method

Test Item Specifications Test Results Test Method Test Specifications Criteria
Contact angle 15o ≥ 12o Measurement of the angle after dropping water droplets on the surface ASTM D 5946
Visible light transmittance ratio 85% 86% Measurement of transmittance ratio of the visible light spectrum (380-780 nm) KS L 2514
Pencil hardness 9H 9H The level of scratch by pushing a pencil at a constant weight (2 kg) at 45o ASTM D 3363
Acid resistance 4% ≥ 0.5% 23℃±2℃, 1mol/L Immersion in hydrochloric acid for 24 hours KS L 2014 JIS R 3221
Alkali Resistance 4% ≥ 0.5% 23℃±2℃, 1mol/L Immersion in sodium hydroxide for 24 hours KS L 2014 JIS R 3221
Wear Resistance 4% ≥ 0.5% 100 cycles KS L 2014 JIS R 3221
Weather Resistance △E 3.0 ≥ △E 0.2 0.48W/m2(at 310nm) 14 weeks KS M 5982 SAE J 2020
Adhesion 100/100 100/100 Checking of peeling off the adhesive tape of 100-grid checkerboard KS D 6711 ASTM D 3359
Boiling water(2 hours at 100℃) 100/100 100/100 Checking of peeling off the adhesive tape of 100-grid checkerboard - -
SEM Elemental analysis and form observation of surface with electron microscopy

What is the contact angle?

Self-cleaning function: As water spreads on the hydrophilic layer and flows down by gravity, no water droplets are left on the surface of the glass and dust on the surface is removed.

Performance comparison of conventional glass vs Rigmah®-AR vs Rigmah®-AR

Type Conventional glass Rigmah-AR hydrophilic coated glass Rigmah-AR hydrophobic coated glass
Contact Angle('') 25~30 10~15 90 이상
Topology(10,000X magnification with an electron microscope)
3D(10,000X magnification with an electron microscope)
Pencil hardness 9H 9H 6H
T VIS(%) 89 90 91
R VIS(%) 8 7 6
Water spreads on the hydrophilic or hydrophobic layer and flows down by gravity, leaving no water droplets on the surface of the glass and removes dust on the surface

Rigmah® -AR self-cleaning Principle

  • Glass + Coated layer
  • Glass + Coated layer + Contaminated water
  • Glass + Coated layer + Hydrophilic layer + Contaminated water + RainwaterContaminants are removed in the order of ①·②·③.

Rigmah®-AR mass production process

Process Loading Cleaning Coating Curing Cooling Inspection Un.Loading
Capa. 1 day, 3 persons, 8 hours (1 shift) = 1 sheet of 2,438*3,048mm every 6 minutes = 2.4*3.0*10*8=576m2
Photo
Usage Automatic glass
transport system		 Glass surface
cleaning system		 Glass thin
coating system		 Coating surface
hardening system		 Hot glass
cooling system		 Coating thickness
measurement system		 Automatic glass
stacking system
Hours 2 minutes 2~3 minutes 2~3minutes 5 minutes 2~3 minutes 1 minutes 2 minutes
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