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Publication of BE719485ApublicationCriticalpatent/BE719485A/xx
D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
D21H13/36—Inorganic fibres or flakes
D21H13/46—Non-siliceous fibres, e.g. from metal oxides
D21H13/50—Carbon fibres
D—TEXTILES; PAPER
D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
D21F1/00—Wet end of machines for making continuous webs of paper