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
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
  • D21C3/00—Pulping cellulose-containing materials
  • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
  • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites

Landscapes

• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Mechanical Engineering (AREA)
• Paper (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10403089

Family Applications (1)

Country Status (6)

Families Citing this family (2)

• 1976
  • 1976-09-10 CA CA260,981A patent/CA1094263A/en not_active Expired
  • 1976-09-15 FI FI762641A patent/FI762641A/fi not_active Application Discontinuation
  • 1976-09-16 FR FR7627828A patent/FR2324793A1/fr active Granted
  • 1976-09-16 NO NO763179A patent/NO763179L/no unknown
  • 1976-09-17 SE SE7610345A patent/SE7610345L/xx unknown
  • 1976-09-17 JP JP51111654A patent/JPS5240603A/ja active Pending

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