MATERIAL RETENTION-A NEW CONCEPT FOR CMC
It is a well-documented fact that poor water retention will not only increase the solids content of the coating color, but will also change other factors such as the particle size distribution of pigments in the coating layer, the impact of which will become evident. Carboxy Methyl Cellulose (CMC)due to its multi function capability (water retention, rheology modification and the carrying of optical brightnening agents) has traditionally been one of the most important coating components for the provision of good runnability. In this paper we will more correctly discuss the concept of material retention and its implications rather than confine it to the generic term water retention. It is not only water which goes to the base sheet during the coating process, all of the mobile material will be affected as well, such as small pigment particles, latex, optical brighteners and stearate. This is why we are discussing material retention, which will have a huge impact on runnability and the quality of coated paper produced. The need for more targeted material retention systems will be summarised.
coating pigment rheology retention
Teuvo Piilola
Cop Kelco, Huber Company P. O. Box 500, SF-44101 AANEKOSKI, Finland
国际会议
广州
英文
424-427
2006-11-08（万方平台首次上网日期，不代表论文的发表时间）