IMPULSE TECHNOLOGY-A NEW CONSOLIDATION TECHNIQUE FOR IMPROVED PAPER MANUFACTURE
Impulse technology is a high-intensity process in which water from a wet paper web is removed by the combined action of mechanical pressure and intense heat. This results in increased dewatering rates, increased density and increased surface smoothness. At STFI-PackForsk, research activities on impulse technology extended from fundamental studies at laboratory scale to pilot papermaking trials. Results from the pilot trials showed that impulse technology is a viable technique and that it can be applied to the production of several paper grades. This paper illustrates that the specific demands for different grades can be met by tuning the pressing strategies in the impulse units. For example linerboard based on secondary fibres was produced setting both the temperature and the pressure in the impulse units as high as possible. The outgoing dryness could be increased by 10%-points with a 30% to 40% increase in burst index and a 15% increase in compression strength. Impulse technology has a great potential to reduce capital costs, to increase paper machine capacity, to reduce total fibre usage and to improve physical and surface properties of the paper.
Impulse technology high-intensity process wet paper web surface smoothness
Anna Tubek-Lindblom Marie Backstrom Mattias Drotz Erik Blohm
STFI-Packforsk SE-114 86 Stockholm, Sweden
国际会议
广州
英文
457-461
2006-11-08（万方平台首次上网日期，不代表论文的发表时间）