Key Points for Paper Machine Doctor Blade Selection – A Must-Read for Paper Mills

The selection of paper machine doctor blades directly affects paper quality and equipment service life, so paper mills must make precise choices based on actual needs. Polyurethane blades are recommended for the press section: they feature good flexibility, efficiently remove lint and sticky substances from roll surfaces without damaging them. For high-temperature environments in the dryer section, alloy or ceramic blades are preferred for their high temperature resistance, wear resistance, and long-lasting cleaning performance on dryer cylinders. Coating blades should match the paper’s smoothness requirements: soft blades for high-gloss paper and hard blades for coarse paper types. Selection should also consider production speed and pulp impurity content to avoid blind purchasing. This ensures production efficiency, reduces consumable costs, and minimizes downtime for replacements.