SUITABILITY OF NON WOOD FIBRES FOR THE PAPER INDUSTRY

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SUITABILITY OF NON WOOD FIBRES FOR THE PAPER
INDUSTRY

• Giorgio Capretti
• Stazione Sperimentale Carta Cartoni e Paste per
  carta SSCCP
• PULP AND PAPER RESEARCH INSTITUTE, MILAN, ITALY

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RAW MATERIALS FOR THE PAPER INDUSTRY

• SOFTWOOD PULPS
• HARDWOOD PULPS
• ARE OBTAINED BY

MECHANICAL OR LIGHT CHEMICAL TREATMENT
(GROUNDWOOD, TMP, CMP, CTMP) SEMICHEMICAL (NSSC
) CHEMICAL (SULPHITE AND KRAFT)
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• KENAF
• FIBRE SORGHUM
• CORN
• HEMP

PULPING METHODS SODA/ANTHRAQUINONE ORGANOSOLV
NON WOOD FIBRES FOR THE PAPER INDUSTRY
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CHEMICAL ANALYSIS
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PULP PROPERTIES

• KENAF, HEMP AND FLAX YIELD PULPS CONTAINING
  VERY SHORT AND FINE TYPES OF FIBRES AND ALSO VERY
  LONG BAST FIBRES.
• THESE FEATURES EXERT A GREAT INFLUENCE ON THE
  PAPER PROPERTIES ESPECIALLY ON THE TEAR STRENGHT

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PAPER PROPERTIES 1
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PAPER PROPERTIES 2
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S/AQ KENAF BAST COMPARED WITH LAB. SODA/AQ
SOFTWOOD PULP
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PAPER PROPERTIES 3
S/AQ KENAF BAST COMPARED WITH COMMERCIAL WOOD
PULPS
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COMMERCIAL SOFTWOOD KRAFT vs. ORGANOSOLV KENAF
BAST
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KENAF BAST - EFFECTS OF HARVEST PERIOD ON PULP
AND PAPER PROPERTIES
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WORLDWIDE PULP SOURCES
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PULP SOURCES
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PULP SOURCES
THE ONLY NON WOOD PULP MADE IN ITALY ARE COTTON
LINTERS. BESIDES COTTON, WE USE HEMP, FLAX AND
STRAW, ALWAYS IN COMBINATION WITH WOOD PULPS TO
MAKE SPECIALTIES, SUCH AS CIGARETTE PAPER, BANK
NOTES, PERMANENT PAPER, DOCUMENTS, FILTER PAPER.