Patents Assigned to Ahlstrom
  • Patent number: 11400397
    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: Grant
    Filed: March 20, 2020
    Date of Patent: August 2, 2022
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Santosh Chavan, Praveen Jana, Anne Viskari
  • Patent number: 11280090
    Abstract: Gypsum board having a core, said core having at least one side covered with a non-woven fabric; characterized in that the inner side of the non-woven fabric, which is in contact with the core of the gypsum board, has a surface roughness Ra of from 25 to 60 micrometers, preferably from 25 to 50 micrometers, advantageously from 25 to 40 micrometers.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: March 22, 2022
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Emmanuel Faynot, Marc Berlioz, Samuel Merlet, Claude Leclercq
  • Publication number: 20220080340
    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: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Applicants: AHLSTROM-MUNKSJÖ OYJ, DONALDSON COMPANY, INC.
    Inventors: KEVIN R. SCHOUWEILER, KENT WILLIAMSON, KRISTIN AMSDEN, STEVEN D. SCHMEICHEL
  • Patent number: 11273399
    Abstract: A filter medium comprising a first conductive fibrous substrate, a second conductive fibrous substrate spaced apart from the first conductive substrate and a third insulation substrate fitted between the first and the second substrates for electrically separating the first conductive substrate from the second conductive substrate. The first conductive fibrous substrate comprises a first layer with first fibers having a first average diameter; a second layer with second fibers having a second average diameter; and a third layer with third fibers having a third average diameter. The second layer comprises activated carbon in an amount sufficient to render the first fibrous substrate conductive. The present medium can be used in electrified filters for cabin air filtration for passenger cars and other vehicles. It can also be used for HVAC filtration for indoor air, and in portable air purification units and even in vacuum cleaners.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: March 15, 2022
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Jan Kaukopaasi, Anne Viskari
  • Publication number: 20210381170
    Abstract: Watermarked Décor paper (11).
    Type: Application
    Filed: October 25, 2019
    Publication date: December 9, 2021
    Applicant: Ahlstrom-Munksjö OYJ
    Inventors: Sébastien CHARIGNON, Sébastien ALAINE, Valérie CALZA
  • Patent number: 11185806
    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: January 29, 2019
    Date of Patent: November 30, 2021
    Assignees: Ahlstrom-Munksjö OYJ, Donaldson Company, Inc.
    Inventors: Kevin R. Schouweiler, Kent Williamson, Kristin Amsden, Steven D. Schmeichel
  • Publication number: 20210347547
    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: Application
    Filed: September 4, 2019
    Publication date: November 11, 2021
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: Florence VIDAL, Mireille ROUX, Gianmaria PAVAN
  • Publication number: 20210339176
    Abstract: The present invention relates to a filter medium being at least formed of a pre-filter substrate laminated with a fine-filter substrate by means of a third binder, wherein the pre-filter substrate comprises synthetic fibers and a first binder, the pre-filter substrate working as a combined surface and depth filter, and the fine-filter substrate comprises at least a second binder and one of synthetic fibers and inorganic fibers.
    Type: Application
    Filed: July 19, 2021
    Publication date: November 4, 2021
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: Anne VISKARI, Jan KAUKOPAASI
  • Patent number: 11123669
    Abstract: A method for manufacturing 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 20% to 90% to ensure that the media is flexible enough to be formed into a fluted structure, and strong enough to retain the fluted structure when would into a roll and to permit further processing.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: September 21, 2021
    Assignee: AHLSTROM-MUNKSJÖ OYJ
    Inventors: Kevin R. Schouweiler, Kent Williamson
  • Patent number: 11065570
    Abstract: The present invention relates to a filter medium being at least formed of a pre-filter sub-strate laminated with a fine-filter substrate by means of a third binder, wherein the pre-filter substrate comprises synthetic fibers and a first binder, the pre-filter substrate work-ing as a combined surface and depth filter, and the fine-filter substrate comprises at least a second binder and one of synthetic fibers and inorganic fibers.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: July 20, 2021
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Anne Viskari, Jan Kaukopaasi
  • Publication number: 20210154607
    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: Application
    Filed: April 16, 2019
    Publication date: May 27, 2021
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: Jesse SHIM, Melissa KANG, Jun KIM, Xiling ZENG, Kauter LIU
  • Patent number: 11001041
    Abstract: Breathable barrier fabrics for protective garments that form liquid impervious seams when overlapped and sealed together via heat-sealing, and the seams formed thereby. The breathable barrier fabric is a heat-sealable, liquid impervious fabric composed of a breathable, liquid impervious thermoplastic film layer having a first melting point and a nonwoven layer bonded to a first surface of the thermoplastic film layer. The nonwoven layer has a second melting point that is higher than the first melting point of the thermoplastic film layer. A second nonwoven layer having the second melting temperature may be bonded to a second surface of the thermoplastic film layer opposite the first surface such that the inner film layer has a lower melting point than the outer nonwoven layers. The heat-sealable, liquid impervious fabric has a moisture vapor transmission rate of at least 800 g/m2/day as determined by ASTM E96-00.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 11, 2021
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Stephen M. Piescik, Vamsi Krishna Jasti
  • Publication number: 20210086116
    Abstract: Fibrous filtration media and method of making the same are provided. According to preferred embodiments, the filtration media includes an embossed wet-laid hot area-calendered nonwoven fibrous web which includes synthetic staple fibers, and from about 20 wt. % to about 80 wt. %, based on total weight of the fibrous web, of bicomponent staple fibers dispersed through the fibrous web. The fibrous web exhibits dry and wet burst strengths of greater than 5 bar, usually greater than 10 bar, and more preferably greater than about 12 bar, or even greater than about 15 bar in some embodiments.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: Jesse Shim, Jessica Lee, Ryan Kwon, Matthew Jeon, Lani Lee
  • Patent number: 10941526
    Abstract: Decoration paper for a decorative laminate, which is inkjet printable, comprising a paper substrate comprising at least one opacifying pigment having a refractive index of greater than 2, and on at least one face of the substrate a surface treatment comprising a binder and between 0.5 and 9 g/m2 of a filler having a specific surface area of between 2 and 100 m2/g and a refractive index of less than or equal to 2.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: March 9, 2021
    Assignee: Ahlstrom-Munksjö Oyj
    Inventor: Sébastien Charignon
  • Publication number: 20210009425
    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: Application
    Filed: February 15, 2019
    Publication date: January 14, 2021
    Applicant: Ahlstrom-Munksjö Oyj
    Inventors: Göran BOLIN, Erkki LAITI, Eric ROUSSET
  • Patent number: 10814258
    Abstract: The present invention relates to a filter medium having improved heat resistance and filtration efficiency.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: October 27, 2020
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Jesse Shim, Kevin Kim, Ryan Kwon, Jayden Bae, Jamie Byeon
  • Patent number: 10781025
    Abstract: A single-layer fibrous substrate comprising, by dry weight compared with the weight of the substrate: between 39.9 and 87.9% natural fibers refined to above 50° SR; between 12 and 60% nanofibrillar polysaccharide; and between 0.1 and 4% of at least one retention agent.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: September 22, 2020
    Assignee: AHLSTROM-MUNKSJÖ OYJ
    Inventors: Francois Toubeau, Gilles Vetter
  • Patent number: 10773539
    Abstract: The invention relates to transfer paper for sublimation printing, comprising a fibrous substrate, said transfer paper having one or more cationic agents on at least one face thereof, deposited on the fibrous substrate by means of surface treatment, the amount of cationic agent(s) being greater than or equal to 8% by dry weight of the total dry weight of the compound(s) added to the fibrous substrate by means of the surface treatment.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: September 15, 2020
    Assignee: Ahlstrom-Munksjö Oyj
    Inventor: Thierry Mayade
  • Patent number: 10765979
    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: October 30, 2015
    Date of Patent: September 8, 2020
    Assignee: Ahlstrom-Munksjö Oyj
    Inventors: Jesse Shim, Kevin Kim, Ryan Kwon, Jinny Kim, Jamie Byeon, David Alan Topolenski, Kevin Ray Townsend
  • Patent number: 10760217
    Abstract: A method for producing a cellulose and/or synthetic fibre-based support of which at least one surface is coated with a layer containing at least one water-soluble polymer comprising hydroxyl or primary-secondary amino functional groups, at least some of which have been functionalized beforehand with at least one organic compound comprising at least one epoxy functional group, and at least one R1 group wherein R1 is a vinyl functional group or at least one Si(R2)3 functional group and wherein R2=hydrogen atom, hydroxyl, alkoxy, alkyl, and combinations thereof.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: September 1, 2020
    Assignee: Ahlstrom-Munksjö Oyj
    Inventor: Diego Fantini