Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container

Apparent Density of paper is the most effective physical property which directly and indirectly affects most of the strength and optical properties of paper such as tensile strength, modulus of elasticity, light scattering coefficient as well as the bonded area between fibers. Since paper making var...

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Autores principales:	Omid Ramazani, Ahmad Jahan latibari, Mohammad mehdi Faezipoor, Ali akbar Enayati, Sayed mehdi Manzor alajdad
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2007
Materias:	Apparent density freeness DRYING TEMPERATURE drying pressure tensile strength restrained drying Free drying Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/a6ec0c9765fe4394a53c317b01db395a
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spelling	oai:doaj.org-article:a6ec0c9765fe4394a53c317b01db395a2021-12-02T02:21:33ZInvestigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container1735-09132383-112X10.22092/ijwpr.2007.117417https://doaj.org/article/a6ec0c9765fe4394a53c317b01db395a2007-03-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117417_cf52a52bc6def59aebef255ffc05c5fc.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XApparent Density of paper is the most effective physical property which directly and indirectly affects most of the strength and optical properties of paper such as tensile strength, modulus of elasticity, light scattering coefficient as well as the bonded area between fibers. Since paper making variables influences the apparent density of paper, in this study, the influence of OCC pulp freeness, and drying conditions are investigated. The influence of three freeness levels of 350,450, and 550 CSF, drying under strain and unstrained, drying temperatures of 100, 150, 200 C and drying pressure of 7 and 10 kg/cm2 are studied. The relationship between paper making variables and apparent density is developed. All measurements of apparent density were analyzed using Minitab 15 and regression model between independent variables was calculated. The results showed that both pulp freeness and drying temperature had the highest impact on apparent density and both factors increased the apparent density. The response of apparent density of the hand sheets dried at 200 ◦C varied considerably and was analyzed thoroughly. Higher pressure increased apparent density of the sheets. The combined effect of variables is also considered. The combined effect of pulp freeness and drying temperature caused lignin softening and delamination. However, the influence of increasing the drying pressure for unrefined and less refined pulp is not significant. Furthermore, for unstrained drying, the influence of freeness on apparent density was more than strained drying. Manufacturing of more desirable quality papers would be possible considering the obtained results and the effect of Apparent Density on paper strength properties.Omid RamazaniAhmad Jahan latibariMohammad mehdi FaezipoorAli akbar EnayatiSayed mehdi Manzor alajdadRegional Information Center for Science and Technology (RICeST)articleApparent densityfreenessDRYING TEMPERATUREdrying pressuretensile strengthrestrained dryingFree dryingForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 22, Iss 1, Pp 1-17 (2007)
institution	DOAJ
collection	DOAJ
language	FA
topic	Apparent density freeness DRYING TEMPERATURE drying pressure tensile strength restrained drying Free drying Forestry SD1-669.5
spellingShingle	Apparent density freeness DRYING TEMPERATURE drying pressure tensile strength restrained drying Free drying Forestry SD1-669.5 Omid Ramazani Ahmad Jahan latibari Mohammad mehdi Faezipoor Ali akbar Enayati Sayed mehdi Manzor alajdad Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container
description	Apparent Density of paper is the most effective physical property which directly and indirectly affects most of the strength and optical properties of paper such as tensile strength, modulus of elasticity, light scattering coefficient as well as the bonded area between fibers. Since paper making variables influences the apparent density of paper, in this study, the influence of OCC pulp freeness, and drying conditions are investigated. The influence of three freeness levels of 350,450, and 550 CSF, drying under strain and unstrained, drying temperatures of 100, 150, 200 C and drying pressure of 7 and 10 kg/cm2 are studied. The relationship between paper making variables and apparent density is developed. All measurements of apparent density were analyzed using Minitab 15 and regression model between independent variables was calculated. The results showed that both pulp freeness and drying temperature had the highest impact on apparent density and both factors increased the apparent density. The response of apparent density of the hand sheets dried at 200 ◦C varied considerably and was analyzed thoroughly. Higher pressure increased apparent density of the sheets. The combined effect of variables is also considered. The combined effect of pulp freeness and drying temperature caused lignin softening and delamination. However, the influence of increasing the drying pressure for unrefined and less refined pulp is not significant. Furthermore, for unstrained drying, the influence of freeness on apparent density was more than strained drying. Manufacturing of more desirable quality papers would be possible considering the obtained results and the effect of Apparent Density on paper strength properties.
format	article
author	Omid Ramazani Ahmad Jahan latibari Mohammad mehdi Faezipoor Ali akbar Enayati Sayed mehdi Manzor alajdad
author_facet	Omid Ramazani Ahmad Jahan latibari Mohammad mehdi Faezipoor Ali akbar Enayati Sayed mehdi Manzor alajdad
author_sort	Omid Ramazani
title	Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container
title_short	Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container
title_full	Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container
title_fullStr	Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container
title_full_unstemmed	Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container
title_sort	investigation on the influence of paper making variables on apparent density of paper produced from old corrugated container
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2007
url	https://doaj.org/article/a6ec0c9765fe4394a53c317b01db395a
work_keys_str_mv	AT omidramazani investigationontheinfluenceofpapermakingvariablesonapparentdensityofpaperproducedfromoldcorrugatedcontainer AT ahmadjahanlatibari investigationontheinfluenceofpapermakingvariablesonapparentdensityofpaperproducedfromoldcorrugatedcontainer AT mohammadmehdifaezipoor investigationontheinfluenceofpapermakingvariablesonapparentdensityofpaperproducedfromoldcorrugatedcontainer AT aliakbarenayati investigationontheinfluenceofpapermakingvariablesonapparentdensityofpaperproducedfromoldcorrugatedcontainer AT sayedmehdimanzoralajdad investigationontheinfluenceofpapermakingvariablesonapparentdensityofpaperproducedfromoldcorrugatedcontainer
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Investigation on the Influence of Paper Making Variables on Apparent Density of Paper Produced From Old Corrugated Container

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