A new fixing agent for rosin emulsion

Abstract

Anionic trashes or anionic interfering substances are released into the water phase from contaminated reused water, recycled fibre, or broke, and form deposits at papermaking process including the wet-end, press section, machine fabrics and rolls.The anionic trashes can cause loweing of productibity by defective products ; sheet break, short shutdown duration. These kinds of troubles can be controlled by dosing cationic coagulant. On the other hand, papermaking trouble is also deriving from the inadequated using of chemicals, such as poor fixing or over dosing of chemicals. These chemicals also behaviored as interfering substances when they enriched in the white water cycling loop. This paper focoused on the unfixed rosin sizing agent, and discussed the chemical charactors and behaviors of the rosin fixing agents by lab and field trials.