PAPPER MED LAG YTVIKT, HOG STYVHET OCH HOG VOLYM SAMT FORFARANDE FOR FRAMSTELLNING DERAV

摘要

Paper having adequate mechanical strength and stiffness for use in xerographic equipment at a very low weight is prepared from a stock containing untreated cellulose fibers as well as cellulose fibers stiffened by impregnation with melamine-formaldehyde precondensate or methylolurea, curing of the initially water-soluble resin, and reaction of the cured resin with polyvinyl alcohol or starch ether.