Process of improving paper formation
First Claim
1. A PROCESS OF IMPROVING THE SHEET FORMATION CHARACFIBER PAPER HAVING A WEIGHT OF APPROXIMATELY 8 GRAMS TO 80 GRAMS PER SQUARE METER CONTAINING APPROXIMATELY 3% TO 40% OF A POSITIVELY CHARGED CARBONATE FILER, COMPRISING INCORPORATING IN THE PAPER FURNISH APPROXIMATELY 0.1% TO 1%, BASED ON THE WEIGHT OF THE FILLER, OF A SIGNREVERSING CHEMICAL SELECTED FROM THE GROUP CONSISTING OF TETRASODIUM PYROPHOSPHATE, SODIUM HEXAMETAPHOSPHATE, SODIUM TETRAPHOSPHATE, SODIUM HEXAMETAPHOSPHATE, VERSES THE SIGN OF THE ELECTRICAL CHARGE ON THE FILLER SO THAT IT BECOMES NEGATIVELY CHARGED AND REPELS THE NEGATIVELY CHARGED CELLULOSIC FIBERS, THEREBY LESSENING THE TENDENCY FOR AGGLOMERATION OF THE CELLULOSIC FIBERS AND FILLER PARTICLES AND RESULTING IN IMPROVED SHEET FORMATION DUE TO BETTER DISTRIBUTION OF THE FIBER AND FILLER COMPONENTS, AND THEREAFTER FORMING PAPER THEREFROM.
0 Assignments
0 Petitions
Accused Products
69 Citations
1 Claim
-
1. A PROCESS OF IMPROVING THE SHEET FORMATION CHARACFIBER PAPER HAVING A WEIGHT OF APPROXIMATELY 8 GRAMS TO 80 GRAMS PER SQUARE METER CONTAINING APPROXIMATELY 3% TO 40% OF A POSITIVELY CHARGED CARBONATE FILER, COMPRISING INCORPORATING IN THE PAPER FURNISH APPROXIMATELY 0.1% TO 1%, BASED ON THE WEIGHT OF THE FILLER, OF A SIGNREVERSING CHEMICAL SELECTED FROM THE GROUP CONSISTING OF TETRASODIUM PYROPHOSPHATE, SODIUM HEXAMETAPHOSPHATE, SODIUM TETRAPHOSPHATE, SODIUM HEXAMETAPHOSPHATE, VERSES THE SIGN OF THE ELECTRICAL CHARGE ON THE FILLER SO THAT IT BECOMES NEGATIVELY CHARGED AND REPELS THE NEGATIVELY CHARGED CELLULOSIC FIBERS, THEREBY LESSENING THE TENDENCY FOR AGGLOMERATION OF THE CELLULOSIC FIBERS AND FILLER PARTICLES AND RESULTING IN IMPROVED SHEET FORMATION DUE TO BETTER DISTRIBUTION OF THE FIBER AND FILLER COMPONENTS, AND THEREAFTER FORMING PAPER THEREFROM.
Specification
-
- Resources
-
Current AssigneeMilton O. Schur, Robert M. Levy
-
Original AssigneeMilton O. Schur, Robert M. Levy
-
InventorsSchur, Milton O., Levy, Robert M.
-
Application NumberUS03/244,474Time in Patent Office1,776 DaysField of SearchUS Class Current162/139CPC Class CodesD21H 17/31 GumsD21H 17/66 Salts, e.g. alumsD21H 17/675 Oxides, hydroxides or carbo...
