wet press
A dewatering unit on the Fourdrinier papermaking
machine, situated between the sheet-forming
equipment and the driers. It uses pressure, or a
combination of pressure and suction to remove
water from the wet web before it reaches the
driers. The press consists of pressure nips, each
formed by a pair of heavy rollers. One of each
pair is usually covered with rubber and may be
perforated and fitted with an internal suction
device which further reduces the amount of water
in the web. The paper web is carried through the
nip of each wet press on a FELT (2) , which
itself, being both bulky and porous, absorbs and
thus removes water from the paper. (17 )
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