U.S. DEPT. OF AGRICULTURE. FOREST SERVICE. FOREST PRODUCTS LABORATORY
Ghanaian hardwood mixtures for pulp and paper
KRAFT PULPS, WITH QUALITY EQUAL TO OR BETTER THAN THOSE OF NORTH AMERICAN HARDWOOD KRAFT PULPS, WERE MADE USING 3 MIXTURES OF 22 GHANAIAN HARDWOOD SPECIES.
Laundrie, James F. · 1970
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Abstract
THE CONCEPT OF USING AIR CLASSIFICATION TO OBTAIN IMPROVED PULP QUALITY FROM MIXED TROPICAL HARDWOODS WAS VERIFIED AS BEING FEASIBLE. ALSO VERIFIED AS BEING FEASIBLE WAS THE IDEA OF USING A HIGH-YIELD KRAFT PROCESS WITH 25 TO 30 PERCENT SCREENINGS BEING USED IN CORRUGATING MEDIUM AND THE REMAINING SCREENED PULP FOR LINERBOARD. HANDSHEET TESTS INDICATE THAT ACCEPTABLE QUALITY CORRUGATING MEDIUM ALSO CAN BE MADE FROM ALL THREE MIXTURES COOKED BY THE NEUTRAL SULFITE SEMICHEMICAL (NSSC) PROCESS. ACCEPTABLE QUALITY NEWSPRINT CAN BE MADE FROM A FURNISH CONTAINING AS MUCH AS 90 PERCENT GHANAIAN HARDWOOD PULPS.
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