METHOD FOR WET FORMING OF PAPER SHEET OF FILTER MEDIUM CONTAINING ION EXCHANGE RESIN

• Main Author: FUJIMURA YOICHI
• Format: Patent
• Language: English
• Published: 03.10.2002
• Edition: 7
• Subjects: IMPREGNATING OR COATING OF PAPER; METHODS OF PRODUCING PAPER THEREON; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PAPER-MAKING MACHINES; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

PROBLEM TO BE SOLVED: To provide a method for wet forming of a paper sheet by which ion exchange capacity can be maintained at a high level in the method for wet forming of the paper sheet of a filter medium containing an ion exchange resin. SOLUTION: This method for the wet forming of the paper sheet of the filter medium containing the ion exchange resin comprises using white water 9 obtained during filtration treatment as a preparing liquid for a slurry stock liquid 7 in the method for the wet forming of the sheet comprising carrying out the filtration treatment of the slurry stock liquid 7 prepared by dispersing a papermaking raw material containing the ion exchange resin in water and forming the paper sheet.