Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
  • D21B1/00—Fibrous raw materials or their mechanical treatment
  • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
  • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
  • D21B1/14—Disintegrating in mills
  • D21B1/16—Disintegrating in mills in the presence of chemical agents
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • 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
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/20—Macromolecular organic compounds
  • D21H17/33—Synthetic macromolecular compounds
  • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H17/47—Condensation polymers of aldehydes or ketones
  • D21H17/48—Condensation polymers of aldehydes or ketones with phenols
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • 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
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/63—Inorganic compounds
  • D21H17/66—Salts, e.g. alums
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • 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
  • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
  • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
  • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
  • D21H23/06—Controlling the addition
  • D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
  • D21H23/16—Addition before or during pulp beating or refining

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• General Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Mechanical Engineering (AREA)
• Inorganic Chemistry (AREA)
• Paper (AREA)
• Dry Formation Of Fiberboard And The Like (AREA)
• Diaphragms For Electromechanical Transducers (AREA)
• Laminated Bodies (AREA)
• Cell Separators (AREA)
• Battery Electrode And Active Subsutance (AREA)
• Crystals, And After-Treatments Of Crystals (AREA)
• Magnetic Record Carriers (AREA)
• Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=20385615

Family Applications (1)

Country Status (16)

Families Citing this family (3)

Family Cites Families (4)

• 1992
  • 1992-03-13 SE SE9200784A patent/SE470101B/sv not_active IP Right Cessation
• 1993
  • 1993-03-05 LT LTIP389A patent/LT3163B/lt not_active IP Right Cessation
  • 1993-03-09 RU RU9394040866A patent/RU2080429C1/ru active
  • 1993-03-09 AU AU37715/93A patent/AU665817B2/en not_active Ceased
  • 1993-03-09 AT AT93906930T patent/ATE144299T1/de not_active IP Right Cessation
  • 1993-03-09 EP EP93906930A patent/EP0663972B1/en not_active Expired - Lifetime
  • 1993-03-09 ES ES93906930T patent/ES2093417T3/es not_active Expired - Lifetime
  • 1993-03-09 NZ NZ251000A patent/NZ251000A/en unknown
  • 1993-03-09 CA CA002131525A patent/CA2131525A1/en not_active Abandoned
  • 1993-03-09 WO PCT/SE1993/000205 patent/WO1993018227A1/en active IP Right Grant
  • 1993-03-09 DE DE69305529T patent/DE69305529T2/de not_active Expired - Fee Related
  • 1993-03-13 LV LVP-93-183A patent/LV10657B/xx unknown
• 1994
  • 1994-09-09 FI FI944158A patent/FI96976C/fi active
  • 1994-09-12 NO NO943379A patent/NO301944B1/no unknown
  • 1994-11-17 EE EE9400251A patent/EE9400251A/xx unknown
• 1996
  • 1996-11-14 GR GR960403024T patent/GR3021653T3/el unknown

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