Patent ID: 7559990

Claim:
An apparatus comprising: an elongated nozzle having an elongated opening defined along its length by a flexible back seal and a metering surface defined with respect to an upward direction of travel of a substrate or roll past the elongated opening, the substrate or roll having a width, the direction of travel such that the substrate or roll first encounters the flexible back seal and later encounters the metering surface, the elongated opening having first and second ends separated by a distance, the distance less than the width of the substrate or roll; the nozzle defining a back direction away from the substrate or roll and a front direction toward the substrate or roll; a first end seal at the first end; a second end seal at the second end; the first seal comprising first, second, and third lips each extending in the direction of travel and each having an edge in the direction of the substrate or roll; the second seal comprising first, second, and third lips each extending in the direction of travel and each having an edge in the direction of the substrate or roll; the first lips of the first and second seals disposed toward each other; the third lips of the first and second seals disposed away from each other; the second lip of the first seal disposed between the first and third lips of the first seal; the second lip of the second seal disposed between the first and third lips of the second seal; the first and third lips of the first seal joined together at top ends thereof; the first and third lips of the second seal joined together at top ends thereof; the edges of the first and third lips of the first and second seals shaped to fit the substrate or roll.