Special Features of ETFE

• Dynamic Features
  Ductility/malleability and Tensile Force : Excellent, Maximum 400%
  Tensile Strength : 400Mpa
  Tearing Strength : 40N/mm
• Fire Proof
  Flame retardant:German standard of DIN(level B1)
  Even though it is only 0.2mm in thickness, fire will not outburst.
• Chemical Stability
  It does not melted when exposed to Sulfuric Acid. It is a proper material for permanent roofing structures as its expected life span is a minimum of 25~35 years under any kind of environmental conditions.
• Self Cleaning
  As dust does not accumulate on the surface of ETFE Membrane, rainwater can wash away easily any dirt.
  Cleaning Cycle : approximately every 5 years
• Sound Proof
  Reverberation is satisfactory under audio frequencies of 500~2000Hz
• Earthquake Proof
  Compared to other structural materials, ETFE structure uses ultra light material, thereby reinforcing earthquake proof capacity.
• Life Span
  Life span of PTFE membrane material and ETFE membrane : over 30 years
  Heat Resistance, weatherability, chemical resistance : Good
  Initial characteristics of the material does not change over long-term use.
• Outstanding Model Effect
  Uses unique and new flexible materials
  Can make various forms and delicate curves
  An absolutely new genre of architecture.

• Flood performance
  ETFE Flood performance from 35% up to 94%
• Thermodynamics U-Values (W/㎡K)
  fault layer : about 6.0
  double cushion : about 2.0
  triple cushion : about 2.0
  quadruple cushion : about 1.5
• Amount of heat coming from outside
  200㎛ single-layer transparent membrane material : about 0.90
  200㎛ single-layer transparent membrane material : about 0.90
  200㎛ printed membrane material : about 0.62
  Triple cushion print membrane material : about 0.52
  Standard glass : about 0.7~0.9
• 200㎛ UV penetration ratio of transparent membrane materials
  UVC : 0.1%
  UVB : 0.3%
  UVA : 10.7%
  Visual light : 88.8%
• Acoustic Damping Noise cut off dimension
  Triple cushion : about 6~7dB
  Double cushion : about 5dB
  Single-layer : about 2~3dB
• Excellent illumination lighting effect
  High permeability rate of 90 to 94 percent.
  Ultraviolet A important for photosynthesis of plants: selective passage
  Ultraviolet C that causes objects to deteriorate and damage human skin: selective blocking (penetration ratio of less than 0.3% in general.)
  Space made of ETFE : Harmless to the human body even if exposed to sunlight.