Method of producing a cellulose fiber structure

• Main Authors: PENG, Frank, BACKFOLK, Kaj, KAZEMAHVAZI, Sohrab
• Format: Patent
• Language: English
• Published: 27.09.2022
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; FIBREBOARD; HANDLING THIN OR FILAMENTARY MATERIAL; IMPREGNATING OR COATING OF PAPER; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS ORFROM PAPIER-MACHE; PACKAGES; PACKAGING ELEMENTS; PACKING; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; STORING; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

The invention discloses a method for producing a three dimensional molded structure from cellulose fibers, comprising the steps of:-providing an aqueous composition comprising cellulose pulp and at least one metal salt in a substantially homogeneous mixture, wherein said mixture has a solid content between 0.05-10wt%;-providing a forming tool having a three dimensional shape comprising a forming portion, and bringing said forming portion into contact with the aqueous composition so that said forming portion is covered with a wet layer of pulp;-dewatering the layer of pulp contacted by the forming tool at temperatures >100°C to a dry content of at least 70wt% to achieve the three dimensional molded structure.