METHOD FOR PRODUCING LIGNOCELLULOSIC PAPER PULPS AND PAPERS, CARDBOARDS, AND PAPERBOARDS OBTAINED THEREFROM

摘要

The invention relates to a method for producing refiner wood pulps, wherein the wood chips were irradiated with hydrogen sulfite and high-energy radiation after slight impregnation and then defibred by means of refiners. The wood-chip-irradiation TMP method (TMP together with wood-chip irradiation) is characterized in that 30 - 50% of the specific energy consumption can be saved during the defibration. The papers produced from wood-chip-irradiation refiner wood pulps processed in multiple stages have improved optical and surface properties while at the same time maintaining strengths.