Patent ID: 7387820
Filing Date: 2008-06-17
Classification: B05C,D21H,Y10T

Abstract:
1. A method for changing a blade in a coating device, in which method a single elongated flexible band, formed of multiple blades to be used in connection with coating, is used, the method comprising the steps of: opening a blade holder arranged in connection with a blade beam; lifting a used blade from the blade holder; removing the used blade from contact with the blade holder; bringing an unused blade through a hollow shaft having a length, into contact with the blade holder, wherein the unused blade is brought through the hollow shaft simultaneously with removing the used blade through an opposite hollow shaft; lowering said unused band into the blade holder in such a way that it settles partly outside of an imagined continuation of the hollow shaft; closing the blade holder, wherein the multiple blades are arranged as a long reeled band, in which band indentations at least the length of the hollow shaft are arranged at regular intervals on a blade holder side of the band, said indentations being positioned, and the unused blade lowered, such that said indentations permit the blade to be lowered into the blade holder and settle partly outside of the imagined continuation of the hollow shaft; and; loading the blade against a paper or board web on a backing roll, and doctoring coating paste on the paper or board web with the blade to regulate the amount of coating paste remaining on the paper or board web and to smooth coating paste on the paper or board web.