Press
A combination of two or more rolls used to press out water from wet paper web. Following are some of the types of the press.
1. Plain Press or Solid Press
This is the simplest and the oldest type of press which is now a days rarely used except on very slow speed machine. The solid press consist of two solid rolls covered with rubber and or granite. The top roll is somewhat offset for the squeezed out water to flow by gravity.
2. Suction Press
In this type of press, one roll is drilled and shell of the drilled roll rotates over a suction box. The squeezed water is sucked out through the felt.
3. Grooved Press
In this type of press, one roll is grooved. The squeezed water is hold in the groves and removed by doctoring or sucking out on the return run of the roll.
4. Smoothing Press
A plain roll press just before the dryer section start, used to smoothen the paper surface.
http://www.paperonweb.com/dict.htm
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The invention relates to a water draining device for a paper machine or the like, in particular for a felted press of paper machines having a receiving tank extending at least essentially over the machine width. Moreover it relates to a press arrangement for dewatering a pulp web.
https://www.google.com/patents/US20040173332

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Two large rolls typically form the ends of the drainage section, which is called the drainage table. The breast roll is located under the flow box, the jet being aimed to land on it at about the top centre. At the other end of the drainage table is the suction (couch) roll. The couch roll is a hollow shell, drilled with many thousands of precisely spaced holes of about 4 to 5 mm diameter. The hollow shell roll rotates over a stationary suction box, normally placed at the top centre or rotated just down machine. Vacuum is pulled on the suction box, which draws water from the web into the suction box. From the suction roll the sheet feeds into the press section.
https://en.wikipedia.org/wiki/Paper_machine