Patents by Inventor Duane K. Zacharias
Duane K. Zacharias has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8303888Abstract: A process is disclosed of forming cellulose fibers. The process includes extruding an aqueous solution of cellulose and a solvent through a first member to form filaments. The first member has multiple rows of first and second openings with a nozzle positioned in each of the first openings. At least one of the nozzles in one row is staggered from at least one of the nozzles in an adjacent row. At least a portion of each of the filaments is shrouded in a pressurized gas emitted through each of the first openings. Each of the filaments is contacted with a liquid to remove some of the solvent and transform each of the filaments into a continuous solid fiber. The continuous solid fibers are then collected on a moving surface to form a non-woven cellulose web.Type: GrantFiled: April 11, 2008Date of Patent: November 6, 2012Assignee: Reifenhauser GmbH & Co. KGInventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, Sr., Duane K. Zacharias
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Patent number: 8029259Abstract: An array of nozzles is disclosed for forming multiple cellulose fibers. Each nozzle has a longitudinal central axis and includes a tube with a cross-section having a diameter through which an aqueous solution of cellulose and a solvent can be extruded into a molten filament. A first opening is present which surrounds each of the tubes. The first opening has a cross-section with a diameter, and each of the first openings is capable of emitting a pressurized gas which surrounds one of the extruded molten filaments. At least three second openings are spaced away from each of the first openings. Each of the second openings is capable of emitting a pressurized gas stream essentially parallel to the longitudinal central axis of each of the nozzles, and each of the pressurized gas streams functions to shroud one of the extruded molten filaments.Type: GrantFiled: April 11, 2008Date of Patent: October 4, 2011Assignee: Reifenhauser GmbH & Co. KG MaschinenfabrikInventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, Sr., Duane K. Zacharias
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Patent number: 8029260Abstract: An apparatus is disclosed for extruding cellulose fibers. The apparatus includes a first member, a second member and a third member all secured together. Multiple nozzles extend outward from the first member and each is designed to direct an aqueous cellulose solution therethrough. As the aqueous solution is extruded, it is accentuated and accelerated by pressurized gas flowing through the first member and the second member and out through first openings formed in the third member. The pressurized gas at least partially surrounds each nozzle and shelters the molten filaments extruded therefrom. The third member also has multiple second openings formed therethrough which are also connected to a source of pressurized gas. The pressurized gas streams exiting each of the second openings function to keep each of the molten filaments from contacting an adjacent molten filament.Type: GrantFiled: April 11, 2008Date of Patent: October 4, 2011Assignee: Reifenhauser GmbH & Co. KG MaschinenfabrikInventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, Sr., Duane K. Zacharias
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Publication number: 20090256277Abstract: An apparatus is disclosed for extruding cellulose fibers. The apparatus includes a first member, a second member and a third member all secured together. Multiple nozzles extend outward from the first member and each is designed to direct an aqueous cellulose solution therethrough. As the aqueous solution is extruded, it is accentuated and accelerated by pressurized gas flowing through the first member and the second member and out through first openings formed in the third member. The pressurized gas at least partially surrounds each nozzle and shelters the molten filaments extruded therefrom. The third member also has multiple second openings formed therethrough which are also connected to a source of pressurized gas. The pressurized gas streams exiting each of the second openings function to keep each of the molten filaments from contacting an adjacent molten filament.Type: ApplicationFiled: April 11, 2008Publication date: October 15, 2009Applicant: Biax FiberfilmInventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, SR., Duane K. Zacharias
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Publication number: 20090258562Abstract: A process is disclosed of forming cellulose fibers. The process includes extruding an aqueous solution of cellulose and a solvent through a first member to form molten filaments. The first member has multiple rows of first and second openings with a nozzle positioned in each of the first openings. At least one of the nozzles in one row is staggered from at least one of the nozzles in an adjacent row. At least a portion of each of the molten filaments is shrouded in a pressurized gas emitted through each of the first openings. Each of the molten filaments is contacted with a liquid to remove some of the solvent and transform each of the molten filaments into a continuous solid fiber. The continuous solid fibers are then collected on a moving surface to form a non-woven cellulose web.Type: ApplicationFiled: April 11, 2008Publication date: October 15, 2009Applicant: Biax FiberfilmInventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, SR., Duane K. Zacharias
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Publication number: 20090258099Abstract: An array of nozzles is disclosed for forming multiple cellulose fibers. Each nozzle has a longitudinal central axis and includes a tube with a cross-section having a diameter through which an aqueous solution of cellulose and a solvent can be extruded into a molten filament. A first opening is present which surrounds each of the tubes. The first opening has a cross-section with a diameter, and each of the first openings is capable of emitting a pressurized gas which surrounds one of the extruded molten filaments. At least three second openings are spaced away from each of the first openings. Each of the second openings is capable of emitting a pressurized gas stream essentially parallel to the longitudinal central axis of each of the nozzles, and each of the pressurized gas streams functions to shroud one of the extruded molten filaments.Type: ApplicationFiled: April 11, 2008Publication date: October 15, 2009Applicant: Biax FiberfilmInventors: Douglas B. Brown, Jeffrey D. Stark, Carmen A. Granato, SR., Duane K. Zacharias
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Patent number: 7238236Abstract: An apparatus for making a wet roll including a body of a roll of wet wound sheet material, where the body of the roll is connected to a tail of the roll, means for applying an adhesion promoter between the body and the tail and means for contacting the body and the tail. The body and tail of the roll contain a wetting solution.Type: GrantFiled: November 14, 2002Date of Patent: July 3, 2007Assignee: Kimberly-Clark Worldwide, Inc.Inventors: David J. Wilks, Andrew Peter Doyle, Kenneth Y. Wang, Duane K. Zacharias
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Publication number: 20040096483Abstract: A method of making a wet roll includes providing a body of a roll of wet wound sheet material, where the body of the roll is connected to a tail of the roll, applying an adhesion promoter between the body and the tail, and contacting the body and the tail. The body and tail of the roll contain a wetting solution.Type: ApplicationFiled: November 14, 2002Publication date: May 20, 2004Inventors: David J. Wilks, Andrew Peter Doyle, Kenneth Y. Wang, Duane K. Zacharias
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Patent number: 6187140Abstract: A method of increasing the wet strength of a creped sheet, which method involves providing a sheet which includes cellulosic fibers, which sheet has a first side and a second side; applying a low temperature-curing latex adhesive binder composition to the first side of the sheet in a fine, spaced-apart pattern occupying from about 20 to about 50 percent of the surface area of the sheet; adhering the first side of the sheet to a creping surface; and creping the sheet from the creping surface. The binder composition is adapted to adhere the sheet to the creping surface and includes a functional group-containing latex, a functional group-reactive crosslinking agent, and a volatile base. In addition, the creping surface is heated at a temperature no greater than about 100° C.Type: GrantFiled: December 7, 1998Date of Patent: February 13, 2001Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Ralph Anderson, Christopher Lee Davidson, Kenneth Curtis Larson, Thomas C. Saffel, Robert Emil Weber, Duane K. Zacharias