dosing system materiaalirainojen, in particular paper or karton kirainojen for devices for coating

摘要

Devices for coating paper or cardboard webs with a metering system which contains a doctor blade (2) as the metering component are known. The doctor blade (2) is held by a bed (3) of elastic, preferably rubber-elastic, material fitted in an adjustable holder (5) and supported on the rear away from the doctor blade (2) by a pressure hose (6) extending transversely across the working width. According to the invention, the pressure hose (6) is divided transversely over the working width into individual pressure chambers (6.1-6.4) to which compressed air can be separately applied.