Breathable Sheet
Waterproof sheet with excellent air permeability, preventing rainwater and river water infiltration
It is a three-layered sheet consisting of a permeable waterproof sheet with excellent waterproofing and air permeability sandwiched between protective mats.
New Technology Information System “NETIS Registration”: Breathable Sheet “Breathable Sheet” Registration No. CB-160004-A
*For sales only in the Japanese market.
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Product & Service
Product Overview
Waterproof sheet with excellent air permeability, preventing rainwater and river water from entering
Breathable Sheet Features
- Three-layer integrated sheet consisting of a waterproof and air-permeable air-permeable sheet and a protective mat that protects both sides of the sheet
- Lighter weight than conventional impervious sheets
- Joints are also waterproof (thermally fused or glued joints)
Waterproof effect
Permeability
Protective effect
Physical properties table
| item | unit | standard value | test procedure | |
|---|---|---|---|---|
| thickness come |
2kPa | mm | 5.0 | JIS L 1908 |
| 20kPa | 3.2 | |||
| mass | g/m2 | 600 or more | ||
| tensile strength | N/5cm | 800 or more | ||
| growth rate | % | 60 or more | ||
| Penetration resistance | N | More than 500 | ASTM D 4833 | |
| air permeability | cm/s | 1×10-2 or more | Φ100mm air permeability test apparatus, wet condition | |
| Air permeability*1 ) | cm/s | Less than 1×10-2 | Compliant with JGS 0931 | |
| Joint | Joint Tensile Strength | N/5cm | More than 450 | JIS K 6850, 25mm or 50mm wide strip type test piece |
| Junction leakage | m3/ (m.n) | Less than 1×10-2 | Φ300mm permeability test apparatus, at 50cm water head (Equivalent to 1/10 of the quality standard value of 25 ml/s/1.8 m2 of the common specifications for civil engineering works (draft) of the Ministry of Land, Infrastructure, Transport and Tourism, revised in April, 2017, for the quality standard value of the barrier sheet for revetment works along the slope). |
|
Note 1) Maximum value in vertical permeability test
