PROCESSO PARA SOLTAR FIBRAS DE CELULOSE

PROCESSO PARA SOLTAR FIBRAS DE CELULOSE

A process is provided for freeing cellulose fibers from lignocellulosic material, which comprises subjecting particulate lignocellulosic material to irradiation at a frequency within the range from about 10 to about 300,000 MHz (megahertz), at an intensity of at least 0.5 megajoule per kg. of materi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TIBERG E, BERGSTROM J
Format: Patent
Sprache:por
Schlagworte:
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
PAPER-MAKING
PRODUCTION OF CELLULOSE
TEXTILES
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKINGMACHINE
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Beschreibung
Zusammenfassung:A process is provided for freeing cellulose fibers from lignocellulosic material, which comprises subjecting particulate lignocellulosic material to irradiation at a frequency within the range from about 10 to about 300,000 MHz (megahertz), at an intensity of at least 0.5 megajoule per kg. of material, applied in a short pulse having a duration of at most 0.1 second, at such an intensity the water present in the lignocellulosic material is rapidly and even explosively vaporized, and disrupts or destroys the natural structure of the lignocellulosic material, thereby freeing the fibers substantially without deleterious effect upon the length or strength of the fibers.