Method with a horizontal jet applicator for a paper machine wet end
First Claim
1. A method of applying additive to a forming web of paper fiber, the method comprising pumping an additive in a fluid through a channel in an applicator to a horizontal slot with a vertical gap height of less than 0.100 inch at a rate of less than 5 US gallons per minute per inch of the slot, the additive leaving the slot in a substantially horizontal direction above the forming web traveling in a substantially horizontal direction;
- wherein the additive is microfibril; and
wherein the velocity of the additive leaving the slot is about the same as the speed of the forming web traveling in the substantially horizontal direction.
4 Assignments
0 Petitions
Accused Products
Abstract
A method applying additives to a forming web of paper fiber by pumping an additive through a channel in an applicator to a horizontal slot with a vertical gap of less than 0.100 inch at a rate of less than 5 US gallons per minute per inch of the slot, the additive leaving the slot in a substantially horizontal direction above the forming web traveling in a substantially horizontal direction.
8 Citations
16 Claims
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1. A method of applying additive to a forming web of paper fiber, the method comprising pumping an additive in a fluid through a channel in an applicator to a horizontal slot with a vertical gap height of less than 0.100 inch at a rate of less than 5 US gallons per minute per inch of the slot, the additive leaving the slot in a substantially horizontal direction above the forming web traveling in a substantially horizontal direction;
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wherein the additive is microfibril; and wherein the velocity of the additive leaving the slot is about the same as the speed of the forming web traveling in the substantially horizontal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. A method of applying microfibrils to a forming web of paper fiber, the method comprising pumping microfibrils in a fluid through a channel in an applicator to a horizontal slot with a gap height between 0.015 and 0.060-inches at a rate of rate of between 1 to 2 US gallons per minute per inch of the slot, the slot being formed from long, essentially parallel lips so that shear thinning of the microfibrils occurs, the microfibrils in a fluid leaving the slot in a substantially horizontal direction above the forming web traveling in a substantially horizontal direction with the velocity of the microfibrils in a fluid leaving the slot at about the same as the speed of the forming web traveling in the substantially horizontal direction.
Specification