Patents Assigned to Lenzing Aktiengesellschaft
  • Patent number: 11952714
    Abstract: A process (1, 101, 201) for separating a fibrous target component (21) from textile waste (2, 5) is shown, said textile waste (2, 5) containing the target component (21) and at least one ancillary component (22), whereby the target component (21) consists of water-swellable textile fibers (51) with a density higher than the density of water, the process (1, 101, 201) comprising the steps: a) dispersing the comminuted textile waste (5) in an aqueous solution (7) to obtain a suspension (8) containing the textile waste (5), and b) separating the dispersed textile waste (5) into a high-density target fraction (81) comprising the target component (21), and a low-density residual fraction (82) comprising the at least one ancillary component (22), according to the respective density of said components (21, 22).
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 9, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11939713
    Abstract: A plant (1) for the production of spunbonded nonwoven (8), comprising a spinning solution production (3), a spinning system (2), a device (6) for the delivery of coagulation liquid, at least one conveying device (7, 9) for depositing the spunbonded nonwoven (8), and a collecting device (13) for the spunbonded nonwoven (8), wherein at least one discharge device (14) is provided between the device (6) for the delivery of coagulation liquid and the collecting device (13) for the spunbonded nonwoven (8).
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: March 26, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Ibrahim Sagerer-Foric, Markus Malzner, Martin Lichtenthal
  • Patent number: 11932969
    Abstract: The present invention relates to a high-tenacity cellulosic regenerated fiber with an individual fiber titer of between 0.6 and 0.9 dtex and yarns and planar textile structures which contain regenerated fibers of this kind.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: March 19, 2024
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Johann Leitner, Gert Kroner, Egon Dünser, Karin Kämpf, Harald Schobesberger, Roland Möslinger
  • Patent number: 11898272
    Abstract: The present invention provides a process for the viable production of lyocell cellulose continuous filament yarns at very high production speeds.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: February 13, 2024
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Christoph Schrempf, Johann Pillichshammer, Andreas Gressenbauer, Ernst Reiter, Martin Neunteufel
  • Patent number: 11898273
    Abstract: The present invention relates to a cellulosic fiber of the lyocell genus. The fiber according to the invention has the following properties: a) the fiber has a content of hemicellulose of 5 wt. % or more b) the fiber is characterized by the Hoeller factors F1 and F2 as follows: Hoeller factor F1?0.7+x and ?1.3+x Hoeller factor F2?0.75+(x*6) and ?3.5+(x*6) wherein x is 0.5 if the fiber does not contain a matting agent and x is 0 if the fiber does contain a matting agent, and if x is 0.5, the fiber is essentially free from any incorporation agent.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 13, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Verena Silbermann, Martina Opietnik
  • Patent number: 11873581
    Abstract: The present invention relates to a method for cleaning a spunbonding spinneret for the production of cellulosic spunbonded nonwoven fabric from a solution of cellulose in an aqueous organic solvent by extruding the solution through nozzle holes of the spunbonding spinneret to form filaments and stretching the filaments in the direction of extrusion by means of a gas stream, during which method contaminations containing cellulose will accumulate on the spinneret surface. The method according to the invention comprises the steps of: a) spraying the contamination with an aqueous fluid precipitating the cellulose; and b) detaching and carrying away the contamination by means of the gas stream.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 16, 2024
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Ibrahim Sagerer-Foric, Markus Malzner, Matthias Gschwandtner
  • Patent number: 11873580
    Abstract: The present invention provides a process for the viable removal of liquid from lyocell cellulose continuous filament yarns at very high production speeds.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 16, 2024
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Johann Pillichshammer, Christoph Schrempf, Andreas Gressenbauer, Ernst Reiter, Martin Neunteufel
  • Patent number: 11828005
    Abstract: A method of producing a chemical pulp from a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and producing regenerated molded bodies from the chemical pulp based on the cellulosic fibers after mechanically separating and chemically separating.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: November 28, 2023
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11795582
    Abstract: What is shown is a spinning device (1) and a method for spinning up a spinning device (1) for the continuous extrusion of molded bodies (3) from a spinning solution (6), as well as a spin-up device (11) for the execution of the method, in which method the molded bodies (3) are extruded from the spinning solution (6) through spinnerets (7) of the spinning device (1) in the form of a loose spinning curtain (2), the molded bodies (3) of the loose spinning curtain (2) are, after the extrusion, combined into a molded body bundle (4), and the molded body bundle (4) is, in a further step, fed to a draw-off member (10) of the spinning device (1) in order to start a continuous extrusion of the molded bodies (3). In order to make the method for spinning up the spinning device (1) simpler and more reproducible, it is proposed that the molded bodies (3) be combined into the molded body bundle (4) by twisting the spinning curtain (2) around a torsion axis (20).
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: October 24, 2023
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Franz Alfred Dürnberger, Karl Ladner, Martin Lauber, Daniel Reischl
  • Patent number: 11718930
    Abstract: The invention shows a spin-up device (11, 51) and a method for spinning up a spinning device (1, 101) for the continuous extrusion of molded bodies (3) from a spinning solution (6), containing a solvent and cellulose dissolved in the solvent, wherein the molded bodies are extruded from the spinning solution (6) through spinnerets (7) of the spinning device (1, 101) in the form of a loose spinning curtain (2), the molded bodies (3) of the loose spinning curtain (2) are combined into a molded body bundle (4) after the extrusion, and the molded body bundle (4) is, in a further step, fed to a draw-off member (10) of the spinning device (1, 101) in order to start a continuous extrusion of the molded bodies (3). In order to make the spin-up method simpler in terms of process technology and more reproducible, it is proposed to increase the tensile strength of at least some areas of the molded bodies (3) of the loose spinning curtain (2) after their extrusion and before combining them into a molded body bundle (4).
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: August 8, 2023
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Franz Alfred Dürnberger, Christoph Schrempf, Christian Sperger
  • Patent number: 11713523
    Abstract: A fabric made of interwoven twines, wherein, in each case, two yarns are twisted together to form a twine and at least one of the yarns contains polyester staple fibers and cellulosic staple fibers of the types lyocell, viscose and/or modal, the share of cellulosic staple fibers in the fabric ranging from 10% by weight to 90% by weight. The fabric according to the invention is characterized in that the fabric or, respectively, those of the yarns contained therein which contain polyester staple fibers and cellulosic staple fibers as well as the twines produced therefrom comply with two relationships from which the suitability of the fabric for applications in automobiles, particularly in automobile seats, results.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: August 1, 2023
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Friedrich Suchomel, Dieter Eichinger
  • Patent number: 11686016
    Abstract: A lining fabric (3) for a clothing article (1). The lining fabric (3) is hygroscopic to ensure good wearing comfort, and has sufficient dimensional stability to allow washing in a household laundry machine. The lining fabric (3) is made from yarns (6) containing or consisting of Lyocell filaments (7). The Lyocell filaments (7) have an average linear density of less than 1.5 dtex, preferably less than 1.4 dtex and even more preferred, less than 1.3 dtex. The washing shrinkage after five washings is preferably less than 4% in each of two perpendicular directions.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 27, 2023
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Mohammad Abu-Rous, Susanne Carls, Dieter Eichinger, Martin Neunteufel, Christoph Schrempf
  • Patent number: 11519100
    Abstract: Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 6, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach, Christian Sperger
  • Patent number: 11519101
    Abstract: Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 6, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11519104
    Abstract: Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 6, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
  • Patent number: 11414786
    Abstract: The present invention provides a process for the viable production of lyocell cellulose continuous filament yarns.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: August 16, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Christoph Schrempf, Andreas Gressenbauer, Franz Gugerell, Martin Neunteufel, Ernst Reiter
  • Patent number: 11326283
    Abstract: A nonwoven cellulose fiber fabric, in particular directly manufactured from lyocell spinning solution, wherein the fabric comprises a network of substantially endless fibers, and wherein the fibers are homogeneously merged substantially over the entire fabric.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 10, 2022
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Tom Carlyle, Mirko Einzmann, Gisela Goldhalm, Malcolm John Hayhurst, Katharina Mayer, Ibrahim Sagerer-Foric
  • Patent number: 11083817
    Abstract: The invention concerns a hygiene product comprising at least one layer of a nonwoven wherein the nonwoven layer comprises man-made cellulosic fibers wherein the layer or the layers has or have a rewet value of equal to or less than 30% and a liquid strike through time of equal to or less than 6 seconds for the use in disposable hygiene products, such as diapers, feminine pads and incontinence products or in wet wipes like toilet wipes, facial wipes, cosmetic wipes, baby wipes and sanitary wipes for cleaning and disinfection.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: August 10, 2021
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Shayda Rahbaran, Bianca Schachtner
  • Patent number: 10883196
    Abstract: The present invention relates to a fiber of the Lyocell type which has a titer of from 0.8 dtex to 3.3 dtex and is characterized by the following relationships: Höller factor F2?1, preferably ?2 Höller factor F1??0.6 Höller factor F2?6 and Höller factor F2 minus 4.5*Höller factor F1?1, preferably ?3. The fiber according to the invention displays a specific combination of properties with regard to the Höller factors, the flexibility and the abrasion resistance within a planar assembly. Hence, the fiber shows a behavior more similar to viscose and can be processed in the textile chain according to viscose standard methods.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: January 5, 2021
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Christoph Schrempf, Kurt Christian Schuster, Hartmut Rüf, Heinrich Firgo, Karl Michael Hainbucher
  • Patent number: 10821408
    Abstract: The invention relates to a high-concentration mixer (1) for producing a suspension (2), comprising a stationary container (3) and an agitator (8) arranged in the container axis (7), which agitator is connected to a motor via a flange (9) provided in the region of the container bottom (4), which motor is designed for rotationally driving the agitator (8) for mixing the suspension (2) provided in the container (3), wherein the agitator (8) has helical coils (11) which bring about a vertical downward flow (12) of the suspension (2) in the centre of the container (3) and a vertical upward flow (13) of the suspension (2) in the region of the container wall, wherein the flange (9) comprises at least one blade (15) provided on its circumference, which is designed for wiping the suspension (2) from the container (3) and for supporting the vertical upward flow (13) of the suspension (2) in the region of the container wall.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: November 3, 2020
    Assignee: LENZING AKTIENGESELLSCHAFT
    Inventors: Johann Pillichshammer, Christoph Schrempf, Michael Maier, Gerhard Malzner