Loading patent…
AssigneeNippon Steel Corporation
InventorsMagonori Nagase, Katsunori Tobisawa, Yoshihiro Suemune, Hiroyasu Furukawa
Estimating the term…
A method of applying a mutilayer coating film, in which two or more layers of coating film are applied to a flat plate, such as steel plate, by baking finish, which method is effective for preventing of foam generation; and a product with multilayer coating film obtained by the method. There is provided a method of applying a multilayer coating film, including discharging paint films through multiple slits, simultaneously applying these films to a traveling plate to thereby form a multilayer paint film and carrying out drying or baking thereof, characterized in that with respect to the boiling points of solvents contained in adjacent layers of the multilayer paint film, there is such a relationship that the boiling point of solvent contained in the layer close to the plate is equivalent to or lower than the boiling point of solvent contained in the layer remote from the plate, and that the boiling point of solvent contained in the layer closest to the plate is lower than the boiling point of solvent contained in the layer remotest from the plate.
1-12. (canceled)
A product having a multilayer coated film on the surface of a base material, wherein the relationship between the boiling points of residual solvents contained in adjacent layers of the multilayer coated film is such that the boiling point of the residual solvent contained in the layer closer to the base material (lower layer) is equal to or lower than the boiling point of the residual solvent contained in the layer farther from the base material (upper layer), and the boiling point of the residual solvent contained in the layer closest to the base material (lowermost layer) is lower than the boiling point of the residual solvent contained in the layer farthest from the base material (uppermost layer).
A product having a multilayer coated film of three or more layers on the surface of a base material, wherein the thickness of the multilayer coated film is 15 μm or less, the boiling point of the residual solvent contained in the layer of the multilayer coated film closest to the base material is lower than the boiling point of the residual solvent contained in the layer farthest from the base material, and the boiling point or points of the residual solvent or solvents contained in one or more layers, excluding the layer closest to the base material and the layer farthest from the base material, is arbitrary.
Dependencies are inferred from the claim text.