Patent ID: 6468592
Filing Date: 2002-10-22
Classification: D21H,Y10S

Abstract:
A method of coating a web passing in a horizontal web travel direction beneath a slot nozzle extending transversely of the direction, the method comprising the steps of:ejecting a pigment-carrying liquid at a flow speed from a slot of the nozzle to form a downwardly free-falling curtain extending across the web; orienting a vertical inner face of a guide element at each outer edge of the curtain with each face extending from a respective end of the slot downward to adjacent the passing web; cooling the inner faces of the guide elements; and feeding to an upper region of each of the inner faces a respective partial stream of the liquid such that the partial streams flow down the respective inner faces at a speed at least equal to the curtain flow speed and merge with the outer edges of the curtain.