Influence of bulk, stiffness and food-relevant necessities by using secondary fibre qualities - Example carton board

Board makers report that during the last few years the qualify of secondary fibres got worse: increasing of impurities, decreasing bulk index and a poor microbiological cleanness was established By using better specialized equipment and using synergy effects by puffing the main conceptional stress to the stock preparation considerable improvement has been achieved and in some sections the deterioration of secondary fibres has been balanced or better. The different usable amounts of secondary fibre flows with their specific qualifies will influence the use of secondary fibres and the development of specific machine constructions and technological components.