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Architectural membrane material (Chukoh SKY)
Architectural membrane materials are composites made by impregnating glass fiber cloth with fluoroplastic and then baking or laminating it. Glass fiber has properties such as a higher specific strength than steel, heat resistance at 700-800°C, and resistance to low temperatures and ultraviolet rays. In addition to heat resistance and Weatherability, fluoroplastic has unique properties such as non-stick characteristics means things do not stick to it, and water repellency, which means it repels water.
fluoroplastic material adoption record
- Advantages of membrane structures
Reduce construction costs and time
fluoroplastic membranes are lightweight (approximately 1/30 the mass of conventional steel roofs), which reduces the cost of wall and foundation construction. In addition, they are pre-cut and pre-joined at the factory, so only installation work is required on-site, shortening the construction period.
Energy cost savings
fluoroplastic membrane materials have high reflectivity and low absorption rate for sunlight, and small heat capacity, which reduces the penetration of solar energy into structures. In addition, because they are translucent, artificial lighting is not required during the day, resulting in substantial energy cost savings.
Free design that expands your imagination
Membrane structures generally cover large spaces with membrane materials without using internal supporting elements, allowing for free design and diverse space utilization.
A comfortable space filled with natural light
Sunlight passing through fluoroplastic film material becomes a natural diffused light with few shadows, and the original color tone of objects is the same as outdoors. It also provides enough light to plant plants indoors, creating a comfortable space with an outdoor feel.
Always beautiful appearance
Due to the non-stick characteristics and water-repellent properties of fluoroplastic, dust and atmospheric pollutants that accumulate on the surface are washed away every time it rains, maintaining a clean, white finish forever.
- Main Features
non-flammability
fluoroplastic membrane material FGT series is a material that combines heat resistance glass cloth fiber and self-extinguishing PTFE.
For this reason, the FGT series is certified as a non-flammable material.Self-cleaning
Dust and air pollutants that accumulate on the surface of fluoroplastic membrane materials are washed away with each rain, so there is no need for cleaning and the beauty of the material can be maintained for a long time.
Resilience
Generally, the smaller the diameter of the fiber, the higher the tensile strength per unit area. fluoroplastic material uses B yarn, the world's thinnest glass fiber, and is a membrane material with sufficient strength and high safety.
Sound absorption
The fluoroplastic membrane used as an interior material has moderate flexibility and air permeability, so when used as the inner membrane material in a double membrane structure, it can improve the acoustic effect inside a building.
Translucency
Natural light entering the building through fluoroplastic membrane becomes naturally diffused light, creating a soft space with fewer shadows.
Thermal properties
fluoroplastic membrane reflects most of the solar energy, reducing the heat transfer into the building. By using a double membrane structure with fluoroplastic membrane as an interior material, it is possible to improve the insulation effect.
Weatherability
It is not affected by ultraviolet rays or air pollution and maintains its functionality and safety as a roofing material for a long period of time.
- Characteristics table (comparison table)
FGT Series
Product code FGT-1000 FGT-800 FGT-600 FGT-250-1 FGT-250A-1 FGT-250B Test method Thickness (mm)
(Median)1.00 0.80 0.60 0.35 0.40 0.23 JIS K 6404-2-3 Mass (g/ m2)
(Median)1700 1300 1000 470 600 250 JIS K 6404-2-2 Tensile strength (N/3cm)
(minimum value)Vertical 5500 4410 3680 2400 2058 1176 JIS L 1096
Cut Strip Methodside 5000 3528 2940 1800 1568 980 Elongation at break (%)
(Median)Vertical 6.0 5.0 5.0 4.0 3.0 – JIS L 1096
(Non-contact extensometer method)side 12.0 10.0 10.0 5.0 4.0 – Tear strength (N)
(minimum value)Vertical 400 294 225 153 127 59 JIS L 1096
Trapezoid methodside 450 294 225 96 98 59 Visible light transmittance after bleaching (%)
(Median)10 12 15 19 18 40 JIS R 3106
(Spectrophotometer)Visible light reflectance after bleaching (%)
(Median)82 80 78 78 78 60 JIS R 3106
(Spectrophotometer)Ventilation measure (cm 3 /cm 2 ･s)
(Median)– – – 8 – 10 JIS L 1096
(Fragile method)Sound absorption coefficient (NRC)
(Median)– – – 0.45 – 0.45 JIS A 1409
Reverberation Room MethodEF-200 Series
Product code Thickness (mm) Mass (g/ m2) Transmittance (%) Reflectance (%) Tensile strength (N/5cm) Tear Strength (N) Peel strength (N/cm) vertical beside vertical beside vertical beside FF-200 0.5 or higher 900±100 over 50 25+ Over 4925 Over 4965 148 or more 149 and above More than 10 More than 10 [Test methods] Tensile strength: JIS L 1096 (cut strip method) / Tear strength: JIS L 1096 (trapezoid method) / Peel strength: JIS K 6404-5 / Transmittance, reflectance: Our own unique measurement method
- Membrane structure types
Frame membrane structure (fixed/movable)
A structure in which a framework such as a steel frame is used to form a structure such as an arch, three-dimensional frame, etc., and a membrane material is used as the roof and wall material.
Suspension membrane structure (fixed/movable)
It mainly uses a membrane structure and its basic form is a suspended structure (suspension structure).
Air membrane structure (fixed/movable)
A structure in which air is sent into a space covered with a membrane material, increasing the internal air pressure and putting the membrane into a state of tension, thereby resisting its own weight and external forces.
