METHOD FOR PRODUCING CELLULOSE NANOFIBER CONCENTRATED AND DRIED PRODUCT AND VACUUM BELT DRYER

To provide a method for producing a cellulose nanofiber concentrated and dried product excellent in productivity, the method enabling acquisition of a CNF concentrated and dried product enabling generation of a re-dispersion liquid having dispersibility the same as that of a CNF dispersion liquid be...

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Hauptverfasser:	AKAGI MASAAKI, ONOKI SHINICHI, WATABE KEIGO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF IMPREGNATING OR COATING OF PAPER METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING POLYSACCHARIDES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	To provide a method for producing a cellulose nanofiber concentrated and dried product excellent in productivity, the method enabling acquisition of a CNF concentrated and dried product enabling generation of a re-dispersion liquid having dispersibility the same as that of a CNF dispersion liquid before being concentrated and dried.SOLUTION: A method for producing a concentrated and dried cellulose nanofiber product uses a vacuum belt dryer 2 in which an endless conveyor belt 6 and a heating area and a cooling area are sequentially arranged along a moving direction of the endless conveyor belt in a vacuum tank, wherein the vacuum belt dryer 2 is used for obtaining concentrated and dried product by drying the cellulose nanofiber dispersion liquid 7.SELECTED DRAWING: Figure 1 【課題】濃縮・乾燥前のＣＮＦ分散液と同等程度の分散性を有する再分散液を生成することが可能なＣＮＦ濃縮・乾燥品を得ることができる、生産効率に優れたセルロースナノファイバー濃縮・乾燥品の製造方法を提供する。【解決手段】減圧槽内に、無端搬送ベルト６と、前記無端搬送ベルトの移動方向に沿って加熱領域および冷却領域を順次配設してなり、セルロースナノファイバー分散液７を乾燥して濃縮・乾燥品を得るための減圧ベルト乾燥機２を用いて実行されるセルロースナノファイバー濃縮・乾燥品の製造方法である。【選択図】図１