Abstract: A surface for an article has an artificially producible base structure (10). The structure (12) has or develops a capillary effect at which the quotient from capillary work (K) and adhesion work (A) is larger 1. The capillary structures and their capillaries have a negative capillary rise such that liquid is forced from the capillaries, allowing for a self-cleaning effect.

Abstract: The invention relates to a method for producing a contact-fastener part, according to which a support (10) is manufactured with a plurality of columns (12), the latter being preferably produced as one-piece with the support. On said contact-fastener part, at least some of the free ends of the columns (12) are provided with a plurality of individual filaments (14).

Abstract: A device displays information in identification areas of traffic signs, signposts, billboards, license plates, etc. The identification area is provided with a surface having an artificially producible base structure and other structures or itself forms such a surface having a self-cleaning effect. The base structure has or develops a capillary effect in which the quotient of capillary work and adhesion work is greater than 1. The capillaries have a negative rise, that is, liquid is pressed form the capillaries, providing the self-cleaning effect.

Abstract: The invention relates to a surface for an article that has an artificially producible base structure (10). The respective structure (12) has or develops a capillary effect at which the quotient from capillary work (K) and adhesion work (A) is larger 1. The capillary structures and their respective capillaries therefore have a so-called negative capillary rise, that means that liquid is forced from the capillaries, thereby allowing for a self-cleaning effect.

Abstract: A device for displaying information in identification areas of traffic signs, signposts, billboards, license plates, etc. The identification area is provided with a surface having an artificially producible base structure and other structures or itself forms such a surface having a self-cleaning effect. The base structure has or develops a capillary effect in which the quotient of capillary work and adhesion work is greater than 1. The capillaries have a negative rise, that is, liquid is pressed form the capillaries, providing the self-cleaning effect.