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Effect of temperature and moisture content on paper behavior in the nip.


Note: The full, unedited text of these related papers is available in the TAPPI TAPPI Technical Association of the Pulp and Paper Industry  JOURNAL section of TAPPI's web site <www.tappi.org> through a link to the summaries.

Uniformity of paper thickness and surface properties is a key factor determining the end-use performance of paper. For many grades of paper, calendering calendering, a finishing process by which paper, plastics, rubber, or textiles are pressed into sheets and smoothed, glazed, polished, or given a moiré or embossed surface.  is the final processing step where uniformity of paper properties can be controlled.

In this study, we measured the effect of temperature and moisture content on the behavior of paper in the nip of a calender CALENDER. An almanac. Julius Caesar ordained that the Roman year should consist of 365 days, except every fourth year, which should contain 366, the additional day to be reckoned by counting the twenty-fourth day of February (which was the 6th of the calends of March) twice. . We found that uncalendered paper thickness was dependent on both paper temperature and moisture content. The theological behavior of commercial newsprint newsprint

low grade paper used for newspapers. Old newspapers are fed to cattle as an alternative roughage and may occasionally be ingested by dogs. Significant amounts of lead are accumulated in tissues; no cases of poisoning have been recorded in cattle, though it has been
 made from thermomechanical pulp was a strong nonlinear A system in which the output is not a uniform relationship to the input.

nonlinear - (Scientific computation) A property of a system whose output is not proportional to its input.
 function of temperature and moisture content over the conditions investigated. The relationship between permanent and in-nip strain is dependent on paper temperature and moisture content as well as line load. This relationship is valuable for estimating local in-nip strain for a given local permanent strain.
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Copyright 2002, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:Calendering
Author:Douglas, W.J. Murray
Publication:Solutions - for People, Processes and Paper
Date:Dec 1, 2002
Words:162
Previous Article:Some properties of newsprint impregnated with polyvinylamine.(Newsprint)
Next Article:Effect of geometry, and thermal boundary conditions on calender roll thermal deformation.(Calendering)



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