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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 ?
Secondo Hollander e assai probabile che la conversione sia avvenuta dopo che Stazio avesse cominciato a comporre la Tebaide, poiche Topera inizia con l'elogio dell'imperatore Domiziano, acerrimo nemico dei cristiani.
Hollander has completed the largest offices deals in New Jersey in each of the past three years.
Prof Hollander, 51, is head of the Institute of Integrative Biology at the University of Liverpool and is working on a project to create stem cell bandages for torn knee cartilage.
With over 24-years of experience, Hollander joined Union Bank in 2010 as head of the Business Banking group.
Previously, Hollander has worked in product commercialisation including research, development, sales, marketing, business development, operations and government affairs at Bracco Diagnostics and Tyco Healthcare (Covidien).
In 2009, HGGC bought a majority stake in Hollander, contributing significantly to the company's growth.
Trivia: Although Hollander appears to be an extrovert, friends claim he is actually an introvert who is insecure about his skills as an actor.
Olivia's mother said, “Her information was submitted to Hollander Talent Group through Casting Hub.
During her witness testimony, Hollander revealed that the company had spent 24 million dollars on producing Michael's doomed 'This Is It' residency in London, and had budgeted an additional 150,000 dollars a month for Murray's costs.
Award-winning: From left, Jimmy Akingbola as Mick, Lucy Liemann as Ellie, Olivia Colman as Alex, Ellen Thomas as Adoha, Tom Hollander as Adam, Miles Jupp as Nigel, Steve Evets as Colin and Simon McBurney as Archdeacon Robert star in the second series of Rev.
In the United States, Hollander examines ads from The New York Review of Books, Harvard Magazine, and Yale Alumni Magazine.
19 November 2010 - San Francisco-based Union Bank said on Thursday it had hired long-term banking expert Todd Hollander to lead its business banking division.