Preparation method of high-density fiberboard

The invention provides a preparation method of a high-density fiberboard, which comprises the following steps: S1, slicing a log material, and adjusting the moisture content of wood chips to 30-40%; S2, primarily softening the wood chips, then cooking and finally carrying out hot grinding, wherein i...

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Bibliographische Detailangaben
Hauptverfasser:	PAN GUANGPENG, HUANG CHENG, DENG WEIHUA, FENG ZUXIAO, LIN GUICHENG, CHEN YUANKUN, WEI HUALONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUTORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTINGOF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOODFIBRES OR WOOD POWDER NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR REMOVING BARK OR VESTIGES OF BRANCHES SPLITTING WOOD TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	The invention provides a preparation method of a high-density fiberboard, which comprises the following steps: S1, slicing a log material, and adjusting the moisture content of wood chips to 30-40%; S2, primarily softening the wood chips, then cooking and finally carrying out hot grinding, wherein in the primary softening, cellulase and xylanase are adopted for enzymolysis for 2-4 days; in the cooking process, sodium carbonate and sodium hydrogen sulfite accounting for 1-3% of the mass of the wood chips are added into cooking liquor to serve as auxiliaries; S3, carrying out glue mixing and applying procedures on the fibers subjected to hot grinding, and then drying; and S4, carrying out plate blank forming on the dried fibers, and then carrying out plate blank pre-pressing, hot pressing by a hot press and edge cutting to obtain the high-density fiberboard. According to the preparation method, the wood chips are primarily softened through enzymolysis, then the auxiliaries are added for cooking, then hot grindi