| http://www.w3.org/ns/prov#value | - The pressurized gas such as compressed air escaping from under the doctor blade, via the grooves of a grooved-shell roll, generates on the outgoing side of the doctoring assembly and particularly, under the doctor blade thereof, a high vacuum that works by way of an ejector effect so as to remove the possible remains of water and dirt still adhering to the grooves.
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