PAPER AND PROCESS FOR MANUFACTURING PAPER USING MICROFIBRILLATED CELLULOSE IN THE CELLULOSE PULP

摘要

The present invention relates to a process for manufacturing kraft paper, sack kraft paper or card, comprising the addition of 1.0 to 1.5% by weight of MFC having a mean diameter preferably between 1 and 568 nanometres and starch in the range of 1.0 to 10.0 kg/tonne, preferably 5.0 kg/tonne, resulting in a pulp with a higher concentration of microfibres and improved strength, in addition to, consequently, a final paper having a density that varies in the range of 60 to 440 g/m² and having strength properties likewise improved for use in packaging materials.