Device for the direct or indirect application of a liquid or viscid coating medium onto a moving material web

An apparatus for application of a coating medium onto a moving fiber material web having a direction of movement, said apparatus comprising:

• a coater configured for applying the coating medium onto the fiber material web;
• a doctor device disposed a predetermined distance after said coater relative to the direction of movement of the fiber material web, said doctor device being configured for at least one of metering and smoothing the coating medium;
• a support roll configured for carrying and supporting the fiber material web against said doctor device such that the fiber material web moves in a substantially linear path between said coater and said support roll;
• and
• a support arrangement configured for supporting the fiber material web along said substantially linear path between said coater and said support roll, said support arrangement including a textural outer surface configured for generating an air cushion between said textural outer surface and the fiber material web such that said air cushion supports the fiber material web.

An apparatus for application of a coating medium onto a moving fiber material web having a width and a direction of movement, said apparatus comprising:

• a coater configured for applying the coating medium onto a first side of the fiber material web;
• a doctor device disposed a predetermined distance after said coater relative to the direction of movement of the fiber material web, said doctor device being configured for at least one of metering and smoothing the coating medium;
• a support roll configured for carrying and supporting the fiber material web against said doctor device such that the fiber material web moves in a substantially linear path between said coater and said support roll;
• means for stabilizing the fiber material web along said substantially linear path, said stabilizing means being disposed before said doctor device and said support roll relative to the direction of movement of the fiber material web;
• and
• a web guide element configured for carrying one of the first side and a second side of the fiber material web before said substantially linear path relative to the direction of movement of the fiber material web, a position of said web guide element being adjustable in the direction of movement of the fiber material web.

An apparatus for application of a coating medium onto a moving fiber material web having a width and a direction of movement, said apparatus comprising:

• a coater configured for applying the coating medium onto a first side of the fiber material web;
• a doctor device disposed a predetermined distance after said coater relative to the direction of movement of the fiber material web, said doctor device being configured for at least one of metering and smoothing the coating medium;
• a support roll configured for carrying and supporting the fiber material web against said doctor device such that the fiber material web moves in a substantially linear path between said coater and said support roll;
• means for stabilizing the fiber material web along said substantially linear path;
• and
• a monolithic web guide element extending substantially across the width of the fiber material web, said web guide element having two opposite ends, each of said ends being supported, said web guide element being configured for carrying one of the first side and a second side of the fiber material web before said substantially linear path relative to the direction of movement of the fiber material web.

An apparatus for application of a coating medium onto a moving fiber material web having a width and a direction of movement, said apparatus comprising:

• a coater configured for applying the coating medium onto a first side of the fiber material web;
• a doctor device disposed a predetermined distance after said coater relative to the direction of movement of the fiber material web, said doctor device being configured for at least one of metering and smoothing the coating medium;
• a support roll configured for carrying and supporting the fiber material web against said doctor device such that the fiber material web moves in a substantially linear path between said coater and said support roll;
• means for stabilizing the fiber material web along said substantially linear path;
• and
• a web guide element configured for carrying one of the first side and a second side of the fiber material web before said substantially linear path relative to the direction of movement of the fiber material web, said web guide element comprising a plurality of segments, each said segment having two opposite ends, each of said ends being supported.

An apparatus for application of a coating medium onto a moving fiber material web having a width and a direction of movement, said apparatus comprising:

• a coater configured for applying the coating medium onto a first side of the fiber material web;
• a doctor device disposed a predetermined distance after said coater relative to the direction of movement of the fiber material web, said doctor device being configured for at least one of metering and smoothing the coating medium;
• a support roll configured for carrying and supporting the fiber material web against said doctor device such that the fiber material web moves in a substantially linear path between said coater and said support roll;
• means for stabilizing the fiber material web along said substantially linear path;
• a first web guide element configured for carrying one of the first side and a second side of the fiber material web before said substantially linear path relative to the direction of movement of the fiber material web;
• and
• a second web guide element configured for supporting the fiber material web against said coater.