Patent ID: 7993490

Claim:
A method for applying a chemical additive to pulp fiber, said method comprising: a) creating a fiber slurry comprising process water and pulp fibers; b) transporting said fiber slurry to a web-forming apparatus of a pulp sheet machine and forming a wet fibrous web; c) dewatering said wet fibrous web to a predetermined consistency thereby forming a dewatered fibrous web; d) applying a first chemical additive to said dewatered fibrous web thereby forming a chemically treated dewatered fibrous web of chemically treated pulp fibers; e) applying a second chemical additive to said chemically treated dewatered fibrous web; f) drying said chemically treated dewatered fibrous web to a predetermined consistency thereby forming a chemically treated dried fibrous; and g) dispersing the chemically treated pulp fibers of the chemically treated dried fibrous web in water and draining the water from the chemically treated pulp fibers, wherein said chemically treated pulp fibers retain from between about 10 to about 100 percent of the applied amount of said first and second chemical additives.