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Regulations for product quality
The use of membrane matrix materials for membrane-structured buildings and tent warehouses is required to conform to technical standards defined in the notice of the Ministry of Land, Infrastructure, Transport and Tourism. In addition, quality management for inspection items, inspection methods and manufacturing of products is controlled on the basis of ISO 9001.
Standards for membrane-structural buildings and tent warehouses
Standards of membrane matrix materials for membrane-structured buildings defined in No. 666 of 2002 Notice of Ministry of Land, Infrastructure, Transport and Tourism
| Fiber used in a base fabric | Coating material | |
|---|---|---|
| (1) Type A | Glass fiber fabric *Conforming to JIS R 3413-2012 (limited to fiber diameter of 3.3 - 4.05μm) |
Tetrafluoroethylene resin Tetrafluoroethylene perfluoroalkyl vinyl ether copolymer resin Tetrafluoroethylene-hexafluoride propylene copolymer resin |
| (2) Type B | Glass fiber fabric *Conforming to JIS R 3413-2012 |
Vinyl chloride resin, polyurethane resin Fluorine-based resin (excluding tetrafluoroethylene resin, tetrafluoroethylene perfluoroalkyl vinyl ether copolymer resin and tetrafluoroethylene-hexafluoride propylene copolymer resin) Chloroprene rubber Chlorosulfonated polyethylene rubber Olefin-based resin |
| (3) Type C | Polyester-based fiber fabric Polyvinyl alcohol-based fiber fabric Polyamide-based fiber fabric, polyaramide-based fiber fabric Olefin-based fiber fabric (including a kenaf plant fiber mixture) |
| Thickness | 0.5 mm or more |
|---|---|
| Mass | 550 g/m2 or more (membrane matrix material with a base fabric made of synthetic fiber: 500 g/m2 or more) |
| Tensile strength | 200N/cm or more |
| Breaking elongation | 35% or less |
| Tear strength | 100N or more and 15% or more of tensile strength per 1 cm wide |
| Tensile creep elongation | 15% or less (membrane matrix materials using synthetic fibers for a base fabric: 25% or less) |
| Adhesion strength of coating material | 1% or more of tensile strength and 10N or more per 1 cm wide |
| Fiber density | Uniform |
| Texture bowing | Within 10% |
Material hardly to deteriorate or cause wear and tear
Standards of membrane matrix materials for tent warehouses defined in No. 667 of 2002 Notice of Ministry of Land, Infrastructure, Transport and Tourism
Applied scope: Total area: 1,000 m2 or less; eaves height: 5 m or less
| Thickness | 0.45 mm or more |
|---|---|
| Mass | 400g/m2or more |
| Tensile strength | 400N/cm or more |
| Breaking elongation | 40% or less |
| Tear strength | 78N or more |
Material hardly to deteriorate or cause wear and tear
Samples of the certification form/designation form for membrane matrix materials
