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Properties of bundled tree sections of young Scots pine in debarking, chipping, and pulping

Forest products journal, 2006-07, Vol.56 (7-8), p.39-45 [Peer Reviewed Journal]

2008 INIST-CNRS ;COPYRIGHT 2006 Forest Products Society ;Copyright Forest Products Society Jul/Aug 2006 ;ISSN: 0015-7473 ;EISSN: 2376-9637 ;CODEN: FPJOAB

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Title:
Properties of bundled tree sections of young Scots pine in debarking, chipping, and pulping
Author: Jylha, P ; Keskinen, N
Subjects: Applied sciences ; bark ; bleaching ; bundling ; Cost control ; Degradation and preservation ; Environmental aspects ; Exact sciences and technology ; logging ; Mechanical woodworking and drying ; papermaking ; Physical properties ; Pinus sylvestris ; Polymer industry, paints, wood ; product recovery ; Production processes ; Properties ; Properties and testing ; Pulp industry ; Pulpwood ; quality control ; Studies ; trees ; Wood ; wood chips ; wood processing ; Wood products ; Wood-pulp ; Wood. Paper. Non wovens
Is Part Of: Forest products journal, 2006-07, Vol.56 (7-8), p.39-45
Description: Debarking, chipping, and pulping experiments were carried out in order to investigate the suitability of the mix of young tree-section bundles containing pulpwood and energy wood and conventional small-diameter pine pulpwood for wood handling and pulp making. The bundles were composed of topped, undelimbed Scots pine (Pinus sylvestris L.) sections harvested from first thinnings as integrated harvesting of pulpwood and energy wood. The energy fraction was separated in the debarking process. The debarking experiment was started with a reference batch containing 100 percent conventional pulpwood. In the second and the third batches, 8 percent and 16 percent of bundles (volume basis) were added to the wood flow, respectively. Raw material balances and wood losses were computed for each batch, and the physical properties of the chips were analyzed. Pulp yield and quality were determined based on laboratory cooks and bleaching experiments, and the papermaking properties were analyzed. The debarking experiment was successfully completed without any problems, and there were not significant differences in the physical properties of the chip batches. Bark content in all batches was less than 0.1 percent. Pulp properties of the blend batches did not differ from those of the reference batch. Process losses in the blend batches were, however, higher than in the reference batch.
Publisher: Madison, WI: Forest Products Society
Language: English
Identifier: ISSN: 0015-7473
EISSN: 2376-9637
CODEN: FPJOAB
Source: AUTh Library subscriptions: ProQuest Central

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Properties of bundled tree sections of young Scots pine in debarking, chipping, and pulping

2008 INIST-CNRS ;COPYRIGHT 2006 Forest Products Society ;Copyright Forest Products Society Jul/Aug 2006 ;ISSN: 0015-7473 ;EISSN: 2376-9637 ;CODEN: FPJOAB

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