Eucalyptus Substitutions for Uncoated Printing Paper

As eucalyptus fiber has become a prime component of many fine papers, its price has risen. This study was concerned with assessing the change in printability and network properties resulting for the substitution of North American fibers for imported eucalyptus. Results from three pilot plan machine trials of waterleaf paper are reported. In addition to changing the softwood and native hardwood fiber ratios, the effect on gravure printability tests was considered for altering the process variables of machine shake, rush-drag ratio and press load. Fiber composition proved to be the dominant variable in printability with native blends offering qualified substitutes for eucalyptus.