Bar coating apparatus and bar coating method

A bar coating method of bringing a coating bar into contact with an object to be coated, which object is conveyed in a constant direction, so as to apply a coating solution to and remove excess coating solution from the object to be coated, comprising the steps of:

• a. supplying the object to be coated;
• b. pressing, with a pressing member disposed near the coating bar, the object to be coated from a side thereof opposite from the coating bar;
• and
• c. moving, in correspondence to a coating state, the pressing member in a thickness direction of the object to be coated.

A bar coating apparatus comprising:

• a coating bar for contacting an object to be coated, which object is conveyed in a constant direction, so as to apply a coating solution to and remove excess coating solution from the object to be coated;
• a weir member for forming a bead of the coating solution between the object to be coated and the coating bar, the weir member being disposed upstream of the coating bar in a direction in which the object to be coated is conveyed;
• and
• a pressing member for pressing the object to be coated from a side thereof opposite from the coating bar, the member being disposed near the coating bar.

A bar coating apparatus comprising:

• a coating bar for contacting an object to be coated, which object is conveyed in a constant direction, so as to apply a coating solution to and remove excess coating solution from the object to be coated;
• a weir member for forming a bead of the coating solution between the object to be coated and the coating bar, the weir member being disposed upstream of the coating bar in a direction in which the object to be coated is conveyed;
• and
• a clearance-maintaining mechanism for maintaining clearance between the weir member and the object to be coated at a predetermined value of no more than 5 mm.

A bar coating method of bringing a coating bar into contact with an object to be coated, which object is conveyed in a constant direction, so as to apply a coating solution to and remove excess coating solution from the object to be coated, comprising the steps of:

• a. supplying the object to be coated;
• and
• b. forming a bead of the coating solution between the object to be coated and the coating bar with a weir member disposed upstream of the coating bar in a direction in which the object to be coated is conveyed,
• wherein clearance between the weir member and the object to be coated is maintained at a predetermined value of no more than 5 mm.

A bar coating apparatus comprising:

• a coating bar for contacting an object to be coated, which object is conveyed in a constant direction, so as to apply a coating solution to and remove excess coating solution from the object to be coated;
• a weir member for forming a bead of the coating solution between the object to be coated and the coating bar, the weir member being disposed upstream of the coating bar in a direction in which the object to be coated is conveyed;
• and
• a rotational drive for rotating the coating bar at a peripheral speed that differs from a peripheral speed corresponding to the speed at which the object to be coated is conveyed.