METHOD FOR PRODUCING RECYCLED PULP FIBERS, RECYCLED PULP FIBERS, AND USE FOR OZONE

An object of the present disclosure is to provide a method of producing a recycled pulp fiber having a low hemicellulose content and being useful for various uses. The present disclosure has the following configuration. A method of producing a recycled pulp fiber from a pulp fiber to be treated, the...

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Bibliographische Detailangaben
Hauptverfasser:	KONISHI, Takayoshi, BANDOU, Takeshi, OHASHI, Naoto, YAMAKI, Kouichi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS THEREFOR DISPOSAL OF SOLID WASTE IMPREGNATING OR COATING OF PAPER INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES MAKING GRANULES OR PREFORMS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS PULP COMPOSITIONS RECLAMATION OF CONTAMINED SOIL SOIL RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS REGENERATION OF PULPING LIQUORS TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An object of the present disclosure is to provide a method of producing a recycled pulp fiber having a low hemicellulose content and being useful for various uses. The present disclosure has the following configuration. A method of producing a recycled pulp fiber from a pulp fiber to be treated, the method including a recycled pulp fiber forming step of forming the recycled pulp fiber having a hemicellulose content of less than 8.0mass% from the pulp fiber to be treated, by supplying an ozone-containing gas to a treatment tank containing a treatment liquid containing a pulp fiber-containing material containing the pulp fiber to be treated.