Spring Water Treatment Material "Moyai Drain PF Type (Semi-Permeable Type)"

Tunnel FILM method, water inflow treatment material compatible with single shell method.

The "Moyai Drain PF Type" is a water treatment material designed to be directly reinforced with mortar after water treatment work, such as the FILM method and single-shell method used in tunnel construction. The waterproof section features a special laminated sheet made of polyethylene film and non-woven fabric, allowing the mortar to adhere after curing by entangling with the surface non-woven fabric. This anti-peeling effect ensures a strong bond between the drainage material installation side and the reinforcement section. 【Features】 ■ The waterproof sheet does not peel off after installation due to the special laminated sheet of polyethylene film and non-woven fabric. ■ A wide type of chemical synthetic fiber non-woven fabric, 10mm thick, is attached to both sides of the waterproof sheet to prevent mortar from flowing in from the sides of the sheet. ■ Installation is possible by nailing through the non-woven fabric on both sides. ■ The core material has increased voids for improved water permeability, and its flexibility allows for installation that adheres well even on uneven surfaces. ■ It is less likely to clog with free lime and other materials. *For more details, please refer to the catalog or feel free to contact us.

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