METHOD FOR PRODUCING AN AIR-RETAINING FILM WITH TEXTURED SURFACE, AND AN AIR-RETAINING FILM WITH TEXTURED SURFACE

摘要

The invention concerns a method for producing an air-retaining film with textured surface, the air-retaining film comprising an air-retaining layer provided with a liquid-facing side to be contacted with liquid in use, the liquid-facing side comprising a surface morphology with spaced protruding elements whose surfaces are hydrophobic at least regionally, wherein the method comprises the step of laminating an embossed surface of an embossed removable polymeric film onto a side of an at least regionally hydrophobic curable material layer which is at a liquid or semi-cured stage, wherein said embossed surface is a negative of the surface morphology of the liquid-facing side of the air-retaining layer to be produced, the lamination step shaping the curable material layer into an air-retaining layer with a liquid-facing side comprising said surface morphology. The invention also concerns an air-retaining film with textured surface.