Patent ID: 8834679
Filing Date: 2014-09-16
Classification: D06M,D21C,D21H,Y10T

Abstract:
1. A method of forming a high bulk tissue web comprising the steps of mixing cellulosic fiber and a first organic solvent to form an fiber slurry, adjusting the pH of the fiber slurry with a caustic agent to a pH greater than about 9.0 thereby forming a alkaline fiber slurry; adding a cyanuric halide having general Formula (I) in the presence of a second organic solvent: where R=chlorine, bromine, fluorine or iodine to the alkaline fiber slurry thereby forming a modified cellulosic fiber; washing the modified cellulosic fiber; and forming a tissue web from the washed modified cellulosic fiber, wherein the tissue web has a basis weight greater than about 10 grams per square meter (gsm) and a sheet bulk greater than about 6 cc/g.