Abstract: A method of providing a paint coat of an organic polymeric paint composition on a surface of a moving substrate is provided, which includes establishing a quantity of the paint composition, in a high solids form at a temperature such that it is spreadable, in a hip defined by the substrate surface and a smoothing roll to enable paint from the established quantity to pass through the nip as a paint layer on the substrate surface, wherein the smoothing roll has a surface roughness coefficient (Ra) of no more than 1.5, and wherein the maximum surface speed of the smoothing roll expressed as a percentage of the substrate speed bears a linear relationship to the substrate speed such that the surface speed of the smoothing roll is no more than 1.2 percent of the substrate speed at an exemplary low substrate speed of 15 meters per minute and no more than 12 percent of the substrate speed at an exemplary substrate speed of 150 meters per minute.

Abstract: A method and an apparatus for forming a coating of a paint composition on a moveable substrate is disclosed. The method involves determining the volume flow rate of the paint composition that is required to form a desired wet film thickness for a given substrate speed and coating width and supplying the paint composition to a pool in the nip between an applicator roll and a metering roll or other suitable metering means at a flow rate that is substantially equal to the calculated flow rate, and then monitoring the level of the paint composition in the pool and adjusting operating parameters, such as the pressure between the rolls to maintain the paint composition level substantially constant.

Abstract: A method of providing a paint coat of an organic polymeric paint composition (7) on a surface of a moving substrate (4), comprises establishing a quantity (6) of the paint composition, in a high solids form at a temperature such that it is spreadable, in a nip defined by the substrate surface and a smoothing roll (3) to enable paint from the established quantity to pass through the nip as a paint layer on the substrate surface, wherein the smoothing roll has a surface roughness coefficient (Ra) of no more than 1.5, and wherein the maximum surface speed of the smoothing roll expressed as a percentage of the substrate speed bears a linear relationship to the substrate speed, such that the surface speed of the smoothing roll is no more than 1.2 percent of the substrate speed at an exemplary low substrate speed of 15 meters per minute and no more than 12 percent of the substrate speed at an exemplary substrate speed of 150 meters per minute.

Abstract: An apparatus and method for producing a striped coating on a continuously moving strip are provided, in which the apparatus has a smoothing device including a doctor roll forming a nip with the strip. A stationary partition means is provided, which divides the nip into nip lengths, and upstream of the smoothing device is a means to deposit coating materials on the strip for delivery into the respective nip lengths at predetermined rates. The deposit means maintains a bead of coating material in each nip length and a stripe of coating material is formed on the strip from coating material escaping the respective nip length as the strip passes through the nip.

Abstract: In a melt deposition painting station, a solid body of paint is fed onto an endless belt conveyor, incorporating a substantially planar belt flight, a head pulley, and turn round means adjacent to the contact point of the paint block and the moving steel strip and consisting of a stationary guide and an idler pulley. The turn round means is so constructed that the direction of the belt movement after the turn is at least parallel to that of the continuously moving strip and preferably at an angle away from it. The head pulley is preferably coated with a high friction material such as natural rubber. The planar belt flight is adapted to support one or more blocks of substantially solvent-free paint composition, which becomes bonded to the pliable, durable heat-resistant material of the belt. The belt causes continuous movement of the paint block towards one end of the flight to affect melting of some portion of a solid body of paint composition onto a moving strip.