WOOD FIBER BOARD AND METHOD OF MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a wood fiber board which contains no phenolic resin, is manufactured in a simple manner and exhibits bending strength and water resistance comparable to those of wood fiber boards manufactured by including phenolic resin, and a method of manufacturing the wood fiber...

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Hauptverfasser:	TAKESHITA KENJI, SHINKAI HIROMASA, KIMURO MAKOTO
Format:	Patent
Sprache:	eng
Schlagworte:	FIBREBOARD GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS ORFROM PAPIER-MACHE NAILING OR STAPLING MACHINES IN GENERAL PAPER-MAKING PERFORMING OPERATIONS PRODUCTION OF CELLULOSE TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TEXTILES TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a wood fiber board which contains no phenolic resin, is manufactured in a simple manner and exhibits bending strength and water resistance comparable to those of wood fiber boards manufactured by including phenolic resin, and a method of manufacturing the wood fiber board.SOLUTION: The wood fiber board comprises only: wood fibers; polyacrylamide resin which is amphoteric-ionic resin, has monomers having cationic groups and monomers having anionic groups at a ratio of 7:3 to 3:7 on a mole ratio basis, and has 800,000-3,000,000 of a molecular weight; and cationic paraffin. The method of manufacturing the wood fiber board involves preparing slurry to achieve 2-3 mass% of a solid content concentration and 3-5 of pH and adding only the polyacrylamide resin and paraffin to the slurry.