Patent ID: 6071550
Filing Date: 2000-06-06
Classification: B05C,D21H

Abstract:
A method of one of controlling and regulating an apparatus for the application of a coating medium onto an opposing surface, the opposing surface being one of a surface of a traveling fiber material web and an application surface of a coating applicator said method comprising the steps of:providing a support beam:mounting a doctor blade on said support beam said doctor blade being configured for leveling out the coating medium after the coating medium has been applied to the opposing surface, said doctor blade having a position relative to the opposing surface,providing a regulating device configured for adjusting said position of said doctor blade;providing a substantially flexible pressure tubing on said support beam, said pressure tubing being adjustable by fluid pressure against said doctor blade;recording a value of a deformation of said pressure tubing caused by applying pressure, said deformation being representative of a tension condition of said pressure tubing;establishing a plurality of control values for at least one of said regulating device and said fluid pressure in said pressure tubing, said establishing step being dependent upon said recorded deformation, information regarding deformation characteristics of said pressure tubing and information regarding bending characteristics of said doctor blade;adiusting at least one of said regulating device and said fluid pressure in said flexible pressure tubing to thereby change said position of said doctor blade, said adjusting step being dependent upon said established control values; andmaintaining an angle of attack between said doctor blade and the opposing surface at a predetermined value as a result of said adjusting step thereby leveling out the coating medium on the opposing surface.