| 摘要 |
<p>Deinking of impact and nonimpact printed is accomplished by repulping (1) the printed paper in an alkali aqueous medium containing a deinking composition comprising one or more nonionic surfactants and/or alkanols. The presence of the deinking composition causes ink particles to agglomerate, which are removed from the aqueous medium by size and density separation (3, 4, 5 and 6). The invention provides an agglomeration method with high ink removal from all types of impact and nonimpact printed paper.</p> |
