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Title: Características do papel reprográfico produzido com fibras de eucalipto e suas relações com a estabilidade dimensional
Other Titles: = Characteristics of reprographic paper produced with eucaliptus fiber and relationship with dimensional stability
Authors: Mendes, Afonso Henrique Teixeira 
Park, Song Won 
Almeida, Fábio Sérgio 
Ferreira, Paulo Jorge Tavares 
Keywords: Estabilidade dimensional; Hidroexpansividade; Papel reprográfico; Propriedades físicas do papel; Dimensional stability; Higroexpansivity; Reprographic paper; Physical properties of the paper
Issue Date: Aug-2010
Publisher: ABTCP : Associação Brasileira Tecnológica de Celulose e Papel
Serial title, monograph or event: O Papel : revista mensal de tecnologia em celulose e papel
Volume: 71
Issue: 8
Place of publication or event: S. Paulo
Abstract: Like any material made from wood fibers, paper also exhibits dimensional changes as a result of variations in moisture content. This property, called hygroexpansivity, is very important both in the papermaking and in the printing processes. The present work studies the hygroexpansivity of reprographic paper produced with eucalyptus kraft pulp, measuring this property during the process in an industrial paper machine. The study was developed using 75 g/m2 paper samples collected in different positions of a commercial paper machine running at a speed of 1256 m/min. Paper samples were collected along the paper machine, from the forming section up to the finishing section, and also along the cross machine direction at the reel. Besides hygroexpansivity, other physical properties of the paper samples were measured: grammmage, thickness, bulk, porosity, filler content, TSI (tensile stiffness index), TEA (tensile energy absorption), stretch, tensile index, tensile stiffness, breaking length, modulus of elasticity, tear strength and burst strength. The analysis of the results reveals the effect on hygroexpansivity of the operations and treatments involved in the papermaking process (formation, pressing, drying and finishing). The results are discussed with special emphasis on the correlations between hygroexpansivity and the other aforementioned properties.
ISSN: 0031-1057
Rights: openAccess
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais

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