A method and apparatus to enhance fiber development by addition of treatment agent during mechanical pulping

A mechanical pulping method includes: defibrating a comminuted cellulosic material (20); mechanically refining the defibrated cellulosic material (20) in a primary refining step; introducing to the cellulosic material (20) at least one of a chemical agent (36) and a biological during the defibration...

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Bibliographic Details
Main Authors GROSSALBER, JOHANN, HILL, JAN, SABOURIN, MARC, AICHINGER, JOHANN
Format Patent
LanguageEnglish
French
German
Published 17.06.2009
Subjects
APPARATUS THEREFOR
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TEXTILES
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Summary:A mechanical pulping method includes: defibrating a comminuted cellulosic material (20); mechanically refining the defibrated cellulosic material (20) in a primary refining step; introducing to the cellulosic material (20) at least one of a chemical agent (36) and a biological during the defibration step or the mechanical refining step, and producing pulp from the refined and defibrated cellulosic material (20).
Bibliography:Application Number: EP20080020329