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005			20260818114430.0
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035			_a.b11851363
099		9	_aAIT Thesis no.PP-01-6
100	0		_aSarin Sodtivarakul
245	1	4	_aThe fractionation potential of upgrading OCC pulp
260			_aBangkok : _bAsian Institute of Technology, _c2001
300			_a69 leaves
490	1		_aThesis ; _vno. PP-01-6
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502			_aThesis (M.Eng.) - Asian Institute of Technology, 2001
520			_aBetween different recycled fiber grades, the packaging products have the highest utilization rate. Although the strength is a critical requirement for packaging products, recycling reduces its strength properties. Fractionation technology is a well-established process for packaging industry to remedy for the strength loss caused by recycling . . Many different scenarios have been practiced in packaging industry. One general approach is to fraction<\te fiber into long and short fiber fraction, then remix them after refining the long fiber fraction. Although this scheme has been supported, the number of works to verify its advantageous or disadvantageous is scarce. This thesis work has been undertaken to address this issue. Optimum operational conditions required for fractionation using laboratory pressure screen was sought and the finding were applied in processing the present project. The OCC pulp collected directly from the local mill fractionated into long and short fiber fractions using laboratory pressure screen. The long fiber fraction was refined at laboratory scale and remixed with the short fiber fraction. The strength properties of the fractionated and refined stock were measured and compared with those of refined feed stock (unfractionated stock). It was observed that the over all strength performance of refined feed stock is better compared fractionated and refined stock.
650		0	_aWaste paper _xRecycling
650		0	_aPackaging _xResearch
700	1		_aNazhad, Mousa M., _eChairperson
700	1		_aRetulainen, Elias, _eExamination committee
700	1		_aRuhanen, Mauno, _eExamination Committee
810	2		_aAsian Institute of Technology. _tThesis ; _vno. PP-01-6
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B09210
907			_a.b11851363 _bmnait _cu
902			_a240329
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