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Items for "tear index"

Dislocations in Norway spruce fibres and their effect on properties of pulp and paper

Wood “cell-wall deformation” is a comprehensive term describing any physical dislocation in the wall caused by mechanical forces...

Keywords: cell wall, compression, kappa number, kraft cooking, scanning electron microscopy, tear index, tensile index

02/2005 | Holzforschung, Walter de Gruyter
De-esterification and sulfonation in spruce CTMP: Effects on pulp and paper properties

De-esterification and sulfonation reactions, which create new anionic groups in the middle lamella and primary wall layers, are the key chemical reactions in chemithermomechanical pulping...

Keywords: bulk, chemithermomechanical pulping (CTMP), deacetylation, demethylation, fibre size distribution, tear index, tensile index, specific energy demand, sulfonation

07/2006 | Holzforschung, Walter de Gruyter
Effect of abnormal fibres on the mechanical properties of paper made from Norway spruce, Picea abies (L.) Karst.

The aim of the present study was to determine the effect of a variety of abnormal fibres on the mechanical properties of paper made from Norway spruce, Picea abies (L.) Karst...

Keywords: abnormal fibres, cell wall, compression, Dislocations, fertilisation, irrigation, kappa number, kraft cooking, tear index, tensile index, tensile strength

03/2008 | Holzforschung, Walter de Gruyter