Algae resistant edge coating and method of forming same

摘要

A gas-liquid contact body for use in a gas-liquid contact apparatus is formed of a plurality of facially opposed corrugated sheets with the corrugations in alternate sheets being disposed in parallel to form a plurality of criss-crossing channels for gas and liquid. The contact body has an air inlet side including an air inlet portion which is coated with a water-impermeable hydrophilic material whose density on the surface of the sheets decreases from a maximum at the edge of the sheets downstream within the air inlet portion to leave progressively increasing areas of said sheet exposed to air.