Patent ID: 6984290

Claim:
A method for applying a water insoluble chemical additive to pulp fiber, the method comprising: a) mixing pulp fibers with process water to form fiber slurry; b) transporting the fiber slurry to a web-forming apparatus of a pulp sheet machine and forming a wet fibrous web; c) dewatering the wet fibrous web to a predetermined consistency thereby forming a dewatered fibrous web; d) applying a water insoluble chemical additive to the dewatered fibrous web thereby forming a chemically treated dewatered fibrous web containing chemically treated pulp fibers; e) transporting the chemically treated dewatered fibrous web to a paper machine and mixing the dewatered fibrous web with water thereby forming a chemically treated pulp fiber slurry, wherein the chemically treated pulp slurry containing chemically treated pulp fibers having the water insoluble chemical additive retained thereby, wherein the chemically treated pulp fibers have an improved level of chemically retention of the water insoluble chemical additive and retain from between about 25 to about 100 percent of the applied amount of the water insoluble chemically additive.