With excellent water permeability, the sheet gathers rain water to drainpipes quickly. Its filter effect keeps perforated pipes from becoming clogged, preventing water pools from forming.
Rainwater storage method
This product has excellent water permeability, clog resistance, and durability and is used as water permeable sheets separating storage material from the permeating layer in a plastic-made rainwater storage and infiltration facility. It is also used as protective sheets for preventing Geomembrane from being damaged by storage material or backfilling soil.
Main applications and applicable Item No.
|Ground construction||Soil layer separation and horizontal drainage||○||○||○||○|
* AN400 complies with the protective sheet standard of the Association for rainwater storage and infiltration technology.
Properties [catalog values]
* MD(machine direction)/*CD(cross direction)
* The measurement method shall comply with the following.
Tensile strength/tensile elongation: JIS L-1908
Tearing strength: JIS L-1096 (single tongue method)
Burst Strength: ASTM D 4833
Water permeability coefficient: JIS A-1218
Thickness (1): JIS L-1096 (pressure 7g/cm²)
Thickness (2): JIS L-1908 (pressure 20g/cm²)
The AN types are hydrophilically treated.