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(mechanical engineering)
An elongate tube with a central mid-feather and a cylindrical beater roll; formerly used for stock preparation in paper manufacture.



an apparatus of periodic action used for beating fibrous materials in paper production. The machine was first used in Holland at the turn of the 18th century. A hollander consists of a tank with a volume of 3–18 cu m. The tank is divided into two parts, or channels. A drum equipped with cutting blades is installed in one of the channels; a bedplate of beater bars is mounted under the drum. When the watery suspension (slurry), which contains 3–7 percent fibrous material, passes between the bars of the bedplate and the rotating drum, the material is beaten and transferred by the drum bars through the backfall to the other channel. From this channel the material flows by gravity back to the drum.

Hollanders are used for the manufacture of several types of thin paper. The pulp-and-paper industry is replacing hollanders with more productive continuous-action machines, such as conical and disk refining mills.

References in periodicals archive ?
Also, both Robert Hollander and Martinez/Durling ought to be praised for their humility in introducing their commentaries.
In his letters he frequently laments the fondness of Hollanders for "comporationes" and "comessationes," regarding this vice as the main cause of their lack of culture; see Wesseling, 1993, 71-75.
The name Batavians commonly refers to Hollanders in humanist sources; see Wesseling, 1993, 68-83, 95.
To appease those readers who might take offence, he notes there that his Hollanders are blamed for hard drinking: "Verum iidem [the French] vt illis attribuunt [LANGUAGE NOT REPRODUCIBLE IN ASCII] ita nobis [LANGUAGE NOT REPRODUCIBLE IN ASCII] adscribunt.
Not surprisingly, the other letters are also addressed to those born in the Low Countries: a Fleming, a native of Maasrricht, a Frisian, and a Hollander from Amsterdam.
His witty letter to a fellow Hollander requires a more detailed discussion at the end of this section.
In May 1527 Erasmus' assistant Nicolaas Kan (Cannius), a Hollander, is on his way to England.
Een Hollander te peerdt" (A Hollander on horseback) is the saying to which he alludes.
Interestingly, he quotes the saying "Hollander te paert, is een mattelaer op aerden" (A Hollander on horseback is a martyr on earth, fol.
Even so, it should be pointed out that Erasmus, a Hollander by birth, censures the Gueldrians in general on more than one occasion; see the close of this section.
70); however, Balbus is described twice as a Hollander.