Patents Assigned to Ahlstrom
  • Publication number: 20250050257
    Abstract: Fibrous filtration media and methods of making and using the same are provided whereby the media includes a wet-laid nonwoven fibrous web having from about 20 wt. % to about 80 wt. %, based on total weight of fibrous web, of bicomponent staple O1 fibers, and from about 10 wt. % to about 50 wt. %, based on total weight of the fibrous web, of fibrillated lyocell staple fibers. The fibrous web exhibits a wet burst strength of greater than 3 bar, for example between about 3 bar to about 6 bar and is especially suitable eqi for use in filtering process fluids (e.g., water) associated with wire electron discharge machining (WEDM).
    Type: Application
    Filed: October 31, 2024
    Publication date: February 13, 2025
    Applicant: Ahlstrom Oyj
    Inventors: Jesse SHIM, Melissa KANG, Jun KIM, Xiling ZENG, Kauter LIU
  • Patent number: 12162659
    Abstract: Compostable lid for sealing a beverage capsule, composed of a multi-layer complex comprising at least: —a non-woven material containing fibres, at least 50% of which by weight are polylactic acid fibres (PLA), —a film containing a polyhydroxyalcanoate (PHA) polymer other than PLA.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: December 10, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Florence Vidal, Mireille Roux, Gianmaria Pavan
  • Patent number: 12146267
    Abstract: This invention relates to a compostable cellulose-based paper having an oxygen transmission rate of less than 10 cm3/(m2 day), when determined at 23° C. and 50% relative humidity, the compostable cellulose-based paper comprising a continuous cellulosic fiber matrix that comprises native cellulosic fibers and non-fibrous cellulosic material, wherein the content of the non-fibrous cellulosic material in the continuous cellulosic fiber matrix is of from 15 to 50 wt. %.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: November 19, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Noel Cartier, Hervé Planchard
  • Patent number: 12134053
    Abstract: Fibrous filtration media and methods of making and using the same are provided whereby the media includes a wet-laid nonwoven fibrous web having from about 20 wt. % to about 80 wt. %, based on total weight of fibrous web, of bicomponent staple fibers, and from about 10 wt. % to about 50 wt. %, based on total weight of the fibrous web, of fibrillated lyocell staple fibers. The fibrous web exhibits a wet burst strength of greater than 3 bar, for example between about 3 bar to about 6 bar and is especially suitable for use in filtering process fluids (e.g., water) associated with wire electron discharge machining (WEDM).
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: November 5, 2024
    Assignee: Ahlstrom Oyj
    Inventors: Jesse Shim, Melissa Kang, Jun Kim, Xiling Zeng, Kauter Liu
  • Patent number: 12122174
    Abstract: The present disclosure relates to a transfer paper for sublimation printing comprising a fibrous substrate and an ink-receiving layer ink-receiving layer, wherein the ink-receiving layer comprises a cationic inorganic component, a cationic organic component or both in an amount of from 10 to 90 wt. %, optionally a filler in an amount of up to 75 wt. %, a hydrophilic binder in an amount of from 5 to 50 wt. %, and a hydrophobic binder in an amount of from 5 to 50 wt. %, based on the total weight of the ink-receiving layer. The disclosure also provides a method for preparing a transfer paper for sublimation printing, its use in a method for preparing a printed transfer paper, the printed transfer paper, its use in a method for decorating an article by sublimation and the decorated article.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: October 22, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Alexandre Decompte, Marco Aversa
  • Patent number: 12122677
    Abstract: There is provided a method of manufacturing a graphene/graphene oxide layer comprising the steps of: providing a suspension of graphene/graphene oxide in a suspension liquid, applying the suspension on a support, heating the suspension and the support to evaporate liquid to form a layer of graphene/graphene oxide on the support, subjecting the graphene/graphene oxide layer and the support to pressure, and subjecting the graphene/graphene oxide layer to annealing process.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 22, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Göran Bolin, Erkki Laiti, Eric Rousset
  • Patent number: 12116731
    Abstract: This invention relates to a compostable cellulose-based paper having an oxygen transmission rate of less than 10 cm3/(m2 day), when determined at 23° C. and 50% relative humidity, the compostable cellulose-based paper comprising a continuous cellulosic fiber matrix that comprises native cellulosic fibers and non-fibrous cellulosic material, wherein the content of the non-fibrous cellulosic material in the continuous cellulosic fiber matrix is of from 15 to 50 wt. %.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: October 15, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Noel Cartier, Hervé Planchard
  • Publication number: 20240316483
    Abstract: A self-cleaning filtration media for use in hydrocarbon fluid filtration applications has a first layer on an upstream side and a second layer on a downstream side of the self-cleaning filtration media. The first layer is composed of polyethersulfone nanofibers having a diameter of 50-1000 nm (0.05-1 micron) and a basis weight of at least 1 gsm. The second layer is a nonwoven substrate suitable for filtration applications. The self-cleaning filtration media exhibits a dust holding capacity of at least 6 mg/cm2 and a filtration efficiency of greater than 90% for 4 micron particles when the self-cleaning filtration media is tested according to ISO 19438 for fuel filtration and according to ISO 4548-12 for oil filtration.
    Type: Application
    Filed: May 30, 2024
    Publication date: September 26, 2024
    Applicant: Ahlstrom Oyj
    Inventors: Jesse SHIM, Kevin KIM, Ryan KWON, Jayden BAE, Patrick YEO
  • Patent number: 12030006
    Abstract: Fibrous filtration media for hot oil filtration includes a nonwoven fibrous web containing synthetic fibers and at least about 15 wt. %, based on total weight of the fibrous web, of a binder component selected from thermoset binder resins and/or binder fibers. The synthetic fibers of the fibrous web will contain from about 2 wt. % to about 65 wt. %, for example between about 10 wt. % to about 50 wt. %, based on total weight of fibers in the fibrous web, of thermoplastic synthetic microfibers having an average diameter of less than 5 ?l?l. The synthetic fibers are bonded together with the binder component to form the fibrous web which is capable of forming a self-supporting, pleated oil filter media which retains pleats upon contact with oil having a temperature in a range encountered in an internal combustion engine.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: July 9, 2024
    Assignee: Ahlstrom Oyj
    Inventors: David Alan Topolenski, Crawford Garland Arrington, IV
  • Patent number: 12023610
    Abstract: A self-cleaning filtration media for use in hydrocarbon fluid filtration applications has a first layer on an upstream side and a second layer on downstream side of the self-cleaning filtration media. The first layer is composed of polyethersulfone nanofibers having a diameter of 50-1000 nm (0.05-1 micron) and a basis weight of at least 1 gsm. The second layer is a nonwoven substrate suitable for filtration applications. The self-cleaning filtration media exhibits a dust holding capacity of at least 6 mg/cm2 and a filtration efficiency of greater than 90% for 4 micron particles when the self-cleaning filtration media is tested according to ISO 19438 for fuel filtration and according to ISO 4548-12 for oil filtration.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: July 2, 2024
    Assignee: Ahlstrom Oyj
    Inventors: Jesse Shim, Kevin Kim, Ryan Kwon, Jayden Bae, Patrick Yeo
  • Patent number: 12023612
    Abstract: A filtration media with improved filtration, strength, tear resistance and air permeability in the form of a relatively thin and lightweight wet-laid fibrous web that has a wet Mullen ratio of 60% to 80% to ensure that the media is flexible enough to be formed into a fluted structure, and strong enough to retain the fluted structure when wound into a roll and to permit further processing without the media becoming too brittle. The filtration media comprises a blend of cellulose and synthetic fibers having a weight percent of 81 wt % to 87 wt % of a weight of the media and a resin binder having a weight of 13 wt % to 19 wt % (preferably about 16 wt %) of the weight of the media.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: July 2, 2024
    Assignees: AHLSTROM OYJ, DONALDSON COMPANY, INC.
    Inventors: Kevin R. Schouweiler, Kent Williamson, Kristin Amsden, Steven D. Schmeichel
  • Patent number: 12012352
    Abstract: The invention relates to a fibrous mat facer for preparing a gypsum board, to a gypsum board comprising said mat facer and to a system comprising said gypsum board. The fibrous mat comprises at least one ply of a non-woven fabric, and a binder composition, wherein the binder composition represents from 10 to 40 wt % of the total weight of the mat. The binder composition comprises a copolymer comprising a co-monomer unit of a vinyl ester of an alpha branched aliphatic monocarboxylic acid, said copolymer being present in an amount from 25 to 100 wt % of the binder composition weight.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: June 18, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Emmanuel Faynot, Marc Berlioz, Samuel Merlet, Claude Leclercq
  • Patent number: 11993449
    Abstract: A compostable lid intended to seal a beverage capsule is provided. The lid is composed of a multilayer complex successively comprising a non-woven material wherein at least 50% by weight of the fibers are composed of polylactic acid (PLA), an adhesive layer suitable for coming into contact with food, and a support layer composed of a vegetable parchment.
    Type: Grant
    Filed: May 15, 2023
    Date of Patent: May 28, 2024
    Assignee: AHLSTROM OYJ
    Inventors: Valerio Miozzo, Hervé Planchard, Florence Vidal, Mireille Roux
  • Patent number: 11794985
    Abstract: A compostable lid intended to seal a beverage capsule is provided. The lid is composed of a multilayer complex successively comprising a non-woven material wherein at least 50% by weight of the fibers are composed of polylactic acid (PLA), an adhesive layer suitable for coming into contact with food, and a support layer composed of a vegetable parchment.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: October 24, 2023
    Assignee: AHLSTROM OYJ
    Inventors: Valerio Miozzo, Hervé Planchard, Florence Vidal, Mireille Roux
  • Patent number: 11787215
    Abstract: The invention relates to transfer paper for sublimation printing, having one or more alkaline earth salts on at least one face thereof.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 17, 2023
    Assignee: AHLSTROM OYJ
    Inventor: Thierry Mayade
  • Patent number: 11684880
    Abstract: A fibrous media suitable for an oil filter comprising a fibrous web formed from synthetic fibers; optionally at least one additive, and a thermoset binder present at a concentration of at least 15 wt.-% by weight of the fibrous web and/or at least one binder fiber, wherein the synthetic fibers comprise up to 30 wt.-%, preferably up to 20 wt.-%, glass fibers, based on the total weight of the fibers. The fibers are bonded with the thermoset binder and/or the at least one binder fiber to form a web; and the fibrous media is capable of forming a self-supporting, pleated oil filter media which is capable of retaining pleats upon contact with oil having a temperature in the range encountered in a combustion engine.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: June 27, 2023
    Assignee: Ahlstrom Oyj
    Inventors: Jesse Shim, Kevin Kim, Ryan Kwon, Jinny Kim, Jamie Byeon, David Alan Topolenski, Kevin Ray Townsend
  • Patent number: 11649382
    Abstract: A biodegradable cellulose fiber-based substrate, at least one side of which is coated with a release coating including: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, and b) at least one lactone substituted with at least one linear or branched and/or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms. The biodegradable substrate is certified biodegradable in accordance with EN 13432. A method of production thereof is also disclosed.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: May 16, 2023
    Assignee: Ahlstrom Oyj
    Inventors: Menno Dufour, Violaine Durand
  • Publication number: 20230081040
    Abstract: Fibrous filtration media for hot oil filtration includes a nonwoven fibrous web containing synthetic fibers and at least about 15 wt. %, based on total weight of the fibrous web, of a binder component selected from thermoset binder resins and/or binder fibers. The synthetic fibers of the fibrous web will contain from about 2 wt. % to about 65 wt. %, for example between about 10 wt. % to about 50 wt. %, based on total weight of fibers in the fibrous web, of thermoplastic synthetic microfibers having an average diameter of less than 5 ?l?l. The synthetic fibers are bonded together with the binder component to form the fibrous web which is capable of forming a self-supporting, pleated oil filter media which retains pleats upon contact with oil having a temperature in a range encountered in an internal combustion engine.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 16, 2023
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: David Alan TOPOLENSKI, Crawford Garland ARRINGTON
  • Patent number: 11518152
    Abstract: A breathable barrier fabric that is heat sealable and minimizes lint generation without impacting the fabric's overall breathability, comfort and barrier protection, and that can be used to manufacture Helmke Category II or better cleanroom garments suitable for use in ISO Class 3 cleanroom environments and other hygienic applications. The breathable barrier fabric has a composite laminate structure including an inner monolithic film layer made from a breathable polymer bonded to first and second outer spunbond layers comprising thermoplastic bicomponent fibers each having an outer glazed surface where the thermoplastic bicomponent fibers are at least partially flattened.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: December 6, 2022
    Assignee: AHLSTROM-MUNKSJÖ OYJ
    Inventors: Douglas Benton, Vamsi Krishna Jasti
  • Publication number: 20220362695
    Abstract: The present invention relates to a filter medium comprising a substrate and a fine fiber layer on top of the substrate, wherein the substrate comprises a first layer comprising first fibers having a first average diameter and a first maximum fiber length; a second layer comprising second fibers having a second average diameter and a second maximum fiber length; and a third layer comprising third fibers having a third average diameter and a third maximum fiber length; wherein the boundary area between the first and the second layer forms a first blended area comprising first and second fibers; and the boundary area between the second and the third layer forms a second blended area comprising second and third fibers; and wherein the first and the third average diameters are each larger than the second average diameter.
    Type: Application
    Filed: August 1, 2022
    Publication date: November 17, 2022
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: Santosh CHAVAN, Praveen JANA, Anne VISKARI