Doctor blade for roll of paper or board machine, has fiber glass fabric laminated and bonded with plastic matrix, that are coated with hard particles of preset size is placed at vicinity of upper blade surface

摘要

The doctor blade (1) has lower surface (5) and upper surface (4) which terminates at a cutting edge (2) with a thin felt mat of carbon fiber. The blade has glass fiber fabrics (6a-6n) that are laminated on top of each other and are bonded with a plastic matrix. The upper fiber fabric (6a) is coated with hard particles of size less than 30mu m and is placed at the vicinity of upper surface. An independent claim is included for manufacturing method of doctor blade.