Process and device for acting on a paper or cardboard web with one of a fluid and pasty coating medium

A process for coating a moist material web in a wet section of a web production machine comprising:

• guiding the moist material web and at least one screen through a coating point;
• coating at least one surface of the moist material web at the coating point with a coating medium;
• and
• conditioning at least one of the moist material web and the at least one screen with at least one of steam and water in a vicinity of the coating point.

A process for coating a moist material web in a wet section of a web production machine comprising:

• guiding the moist material web and at least one screen through a coating point;
• coating at least one surface of the moist material web at the coating point with a coating medium;
• conditioning at least one of the moist material web and the at least one screen with at least one of steam and water in a vicinity of the coating point;
• separating the at least one screen from the material web after the coating point;
• and
• directly conditioning the material web with at least one of steam and water after separation of the at least one screen from the material web.

A process for coating a moist material web in a wet section of a web production machine comprising:

• guiding the moist material web and at least one screen through a coating point;
• coating at least one surface of the moist material web at the coating point with a coating medium;
• conditioning at least one of the moist material web and the at least one screen with at least one of steam and water in a vicinity of the coating point;
• separating the at least one screen from the material web after the coating point;
• and
• cleaning the at least one screen with at least one of steam and water after separation of the at least one screen from the material web.

A wet section of a material web producing machine comprising:

• at least one endless, water-permeable belt;
• at least one coating device being adapted for one of direct and indirect application of one of a fluid and pasty coating medium onto at least one side of a still-wet material web;
• and
• at least one applicator device, positioned in a region in which the coating medium contacts at least one of the material web and at least one belt, being adapted to condition the at least one of the material web and the at least one belt with at least one of steam and water.