Hugh P. Gallagher - Goshen NY
Nelson F. Hill - Monroe NY
Curtis P. Koster - Mahwah NJ
Robert F. Cassidy - Warwick NY
International Paper Company - Purchase NY
162 18, 162 72, 162 82, 162 83, 162 90, 162 96, 162 97, 162 98, 162 99, 162 56
A process for production of chemical fibrous pulp for making paper, paperboard and other fibrous products from herbaceous plants, such as kenaf. Pulp from the herbaceous plant is made by a process which involves densification of pieces of all or part of the plants; i. e. , both the core and the stalk or just the core portion, into cubes or pellets having a density ranging from about 15 to about 70 lbs/ft , preferably from about 25 to about 50 lbs/ft , which are then chemically digested to produce a fibrous pulp. The densified cubes or pellets may be digested alone or together with conventional wood chips. A principal advantage of the invention is that the densified cubes or pellets exhibit significantly better yield and strength after treatment by conventional chemical pulping methods as compared with the undensified material, enabling more efficient and economical use of this material to supplement limited supplies of conventional hardwood and softwood pulp sources.