Intermittent coating of moving surfaces

A method of intermittently coating a moving surface with paste containing electrochemically active particles by a nozzle having a slot-shaped delivery opening comprising:

• supplying paste to the delivery opening from a paste reservoir via a transport channel;
• and
• regulating paste supply to the delivery opening with a rotatably mounted control axle which enables the paste supply to the delivery opening in a first switching position and, in a second switching position, blocks the transport channel and disconnects a section of the transport channel extending as far as the delivery opening from the paste supply,
• wherein the rotatably mounted control axle comprises a passage via which the paste reservoir is in communicating connection with the delivery opening in the first switching position and the disconnected section of the transport channel is in communicating connection with the reduced pressure source in the second switching position.

A device that intermittently coats a moving surface with a paste containing electrochemically active particles comprising:

• a nozzle having a slot-shaped delivery opening,
• a paste reservoir from which the paste being supplied to the delivery opening via a transport channel, and
• a rotatably mounted control axle which enables the paste supply to the delivery opening in a first switching position and, in a second switching position, blocks the transport channel and disconnects a section of the transport channel extending as far as the delivery opening from the paste supply,
• wherein the rotatably mounted control axle comprises a passage via which the paste reservoir is in communicating connection with the delivery opening in the first switching position and the disconnected section of the transport channel is in communicating connection with the reduced pressure source in the second switching position.

A device that intermittently coats a moving surface with a paste containing electrochemically active particles comprising:

• a nozzle having a slot-shaped delivery opening,
• a transport channel, via which the paste is supplied to the delivery opening from a paste reservoir,
• a controller that regulates paste supply to the delivery opening, enables the paste supply to the delivery opening in a first switching position and, in a second switching position, blocks the transport channel and disconnects a section of the transport channel extending as far as the delivery opening from the paste supply, and
• a reduced pressure channel via which a section of the transport channel disconnected from the paste supply can be connected to a reduced pressure source, the controller formed such that it connects the disconnected part of the transport channel to the reduced pressure source in the second switching position.