EVA board is ethylene–vinyl acetate copolymer with additives and an antioxidant, melted, extruded and calendered into a sheet. ECB is an ethylene copolymer modified with asphalt, produced under pressure from ethylene–vinyl acetate and asphalt resin.
The brochure describes flexibility, impermeability, elongation, abrasion resistance, chemical and ageing resistance, puncture resistance, and a simple placement with no pollution from the sheet itself.
What the brochure emphasises
- Smooth board.
- Composite board, with a nonwoven geotextile typically 200–400 g/m².
- Point-anchor board, with fixing points for tunnel lining.
Uses named in the brochure
- Hydraulic, municipal, building, transport, metro and tunnel work.
- Seepage control, separation, reinforcement and crack control, as named.