1995 Volume 49 Issue 6 Pages 951-955
Newly developed automatic scanning absorptometry (DSA) was employed to investigate the liquid absorption behavior of handsheets prepared with various basis weights, wet-pressing and calendering conditions. While increased basis weight (from 40 g/m2 to 80 g/m2) caused 7-10 fold increases in the Stoeckigt sizing degree, the short-time absorptivity determined by DSA was moderately enhanced by the same change, showing opposite tendencies. The influences of wet-pressing and calendering were also remarkably different for Stoeckigt values and DSA-absorptivity. While linseed oil absorptivity was sensitive to compaction of paper by calendering, the water absorptivity only reflected the change in surface roughness. This behavior confirms that compaction of paper web through calendering is cancelled by reswelling by water.
