FIELD: production of paper or cardboard. SUBSTANCE: method involves examining paper or cardboard production wastes as to fiber composition; separating said wastes into fractions; introducing at least one fraction produced in said manner into certain paper or cardboard layer; adjusting separation of said wastes into fractions so that resultant fiber composition in fiber fractions corresponds to that of basic paper pulp for said certain layer. EFFECT: increased efficiency by optimal utilization of paper or cardboard wastes. 13 cl, 5 dwg
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| METHOD OF PULP PREPARATION | 2000 |
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Authors
Dates
2003-12-20—Published
2000-01-13—Filed