SAETT ATT KOMPENSERA EN SCHABERKLINGAS UTBOEJNING OCH EN UTBOEJNINGSKOMPENSERAD SCHABERKLINGA

摘要

A deflection compensated doctor blade (1) and method for coating a moving web and scraping a backing member (5). The deflection of the doctor blade is compensating by first determining the deflection of the doctor blade and then adapting appropriately selected, non-continuous forces to be exerted on the doctor blade (1) so as to achieve by these forces such deformations in the doctor blade that have an equal magnitude but an opposite direction in relation to those caused by blade loading on the doctor blade (1). This approach results in the nullification of the superimposed deflection (11). The forces are adapted to be exerted at a determined distance (RT) from the pivotal bearing points of the doctor blade (1) and at a determined distance (RV) from the pivotal axis (3) of the doctor blade.