Patents by Inventor Thomas Jaschinski

Thomas Jaschinski 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).

  • Publication number: 20220112660
    Abstract: A dewatering device has a dewatering box and a plurality of dewatering strips. A contour of at least one dewatering strip changes over its length. There is also described a machine for the production of a fibrous web, such as a paper, cardboard or tissue web, with a dewatering device of this kind, and to the use of the latter in a machine of this kind.
    Type: Application
    Filed: September 18, 2019
    Publication date: April 14, 2022
    Inventors: BERND STIBI, THOMAS JASCHINSKI, ROBERT ATTWENGER
  • Patent number: 10920373
    Abstract: A method of operating a machine for producing a fibrous web. The machine has a de-watering device with a plurality of pivotally embodied de-watering strips. In the method, an inclination angle of at least one of the de-watering strips is modified as a function of at least one parameter. The modification is effected by way of the pivoting installation which is activated by a control installation. The actual inclination angle of the at least one de-watering strip to be pivoted is detected and transmitted to the control installation. The control installation activates the pivoting installation as a function of the transmitted inclination angle.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: February 16, 2021
    Assignee: Voith Patent GmbH
    Inventors: Thomas Jaschinski, Robert Attwenger, Guilherme Custodio De Araujo
  • Publication number: 20200048835
    Abstract: A method of operating a machine for producing a fibrous web. The machine has a de-watering device with a plurality of pivotally embodied de-watering strips. In the method, an inclination angle of at least one of the de-watering strips is modified as a function of at least one parameter. The modification is effected by way of the pivoting installation which is activated by a control installation. The actual inclination angle of the at least one de-watering strip to be pivoted is detected and transmitted to the control installation. The control installation activates the pivoting installation as a function of the transmitted inclination angle.
    Type: Application
    Filed: September 27, 2017
    Publication date: February 13, 2020
    Inventors: THOMAS JASCHINSKI, ROBERT ATTWENGER, GUILHERME CUSTODIO DE ARAUJO
  • Patent number: 7763148
    Abstract: Disclosed is a method for producing a fibrous web, in particular a paper web, paperboard web or tissue web, with which a material flow of higher consistency and a material flow of lower consistency are mixed in a variable ratio over the machine width and the mixed flow is fed via a headbox as a headbox stream to a mesh section, whereby the mixing ratio between these two material flows of different consistency in the respective mixed flow acts as the set-point variable for controlling the gsm substance of the fibrous web over the machine width. In this case the ratio between the fibrous material content and the filler material content in the material flow of lower consistency is established or controlled such that the filler material fraction in the fibrous web can be established or controlled at least essentially independently of the gsm substance.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: July 27, 2010
    Assignee: Voith Patent GmbH
    Inventors: Jörg Reuter, Thomas Jaschinski
  • Publication number: 20070158044
    Abstract: The present invention relates to a method and a corresponding plant for producing a fibrous web, in particular a paper web, paperboard web or tissue web. The formation of the fibrous web is defined online as a controlled variable and is held at a preselectable set-point level by way of an automatic formation control system.
    Type: Application
    Filed: December 21, 2006
    Publication date: July 12, 2007
    Inventors: Thomas Jaschinski, Ulrich Begemann, Volker Schmidt-Rohr, Rudolf Munch
  • Publication number: 20070095495
    Abstract: Disclosed is a method for producing a fibrous web, in particular a paper web, paperboard web or tissue web, with which a material flow of higher consistency and a material flow of lower consistency are mixed in a variable ratio over the machine width and the mixed flow is fed via a headbox as a headbox stream to a mesh section, whereby the mixing ratio between these two material flows of different consistency in the respective mixed flow acts as the set-point variable for controlling the gsm substance of the fibrous web over the machine width. In this case the ratio between the fibrous material content and the filler material content in the material flow of lower consistency is established or controlled such that the filler material fraction in the fibrous web can be established or controlled at least essentially independently of the gsm substance.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 3, 2007
    Inventors: Jorg Reuter, Thomas Jaschinski
  • Patent number: 6987181
    Abstract: The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C2 and/or C3 as well as at position C6 of the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrous material whose primary and secondary hydroxyl groups of the cellulose are oxidized into aldehyde groups at least in part by means of TEMPO oxidation and periodate oxidation. The invention also concerns a paper or nonwoven comprising the above polysacaride. According to the invention a relative wet strength of more than 10% can be achieved.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: January 17, 2006
    Assignee: SCA Hygiene Products GmbH
    Inventors: Thomas Jaschinski, Susanna Gunnars, Arie Cornelis Besemer, Petter Bragd
  • Patent number: 6875861
    Abstract: A process for producing nitrosonium ions is described, in which a nitroxyl compound such as TEMPO is oxidized using an oxidizing agent in the presence of a complex of a transition metal such as Mn, Fe, Cu, and a complexing agent such as a polyamine. The process is useful for the oxidation of carbohydrates containing at least 1 cyclic monosaccharide chain group carrying a carbaldehyde group per 100 or per 25 monosaccharide units and per molecule.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: April 5, 2005
    Assignee: SCA Hygiene Products Zeist B.V.
    Inventors: Arie Cornelis Besemer, Jan Matthijs Jetten, Thomas Jaschinski, Ronald Tako Marinus Van Den Dool
  • Patent number: 6824645
    Abstract: The present invention relates to a cellulose-containing fibrous material, wherein hydroxy groups were oxidized at the C(6) of glucose units of the cellulose into aldehyde and/or carboxy groups, a paper or nonwoven (product) made therefrom, in particular tissue (products) and a process for their manufacture. The paper or nonwoven (products) of the invention display excellent strength properties.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: November 30, 2004
    Assignees: SCA Hygiene Products GmbH, SCA Hygiene Products Zeist B.V.
    Inventors: Thomas Jaschinski, Susanna Gunnars, Arie Cornelis Besemer, Petter Bragd, Jan Matthijs Jetten, Ronald Van Den Dool, Willem Van Hartingsveldt
  • Patent number: 6770755
    Abstract: In a new process for oxidizing a primary and/or secondary alcohol, an oxidizing agent is used in the presence of a di-tertiary-alkyl nitroxyl, in an aqueous reaction medium at a pH of below 7. The di-tertiary-alkyl nitroxyl is especially 4-hydroxy-TEMPO, and the process is particularly advantageous for oxidizing carbohydrates such as starch.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: August 3, 2004
    Assignee: SCA Hygiene Products Zeist B.V.
    Inventors: Susanna Gunnars, Petter Bragd, Arie Cornelis Besemer, Thomas Jaschinski
  • Publication number: 20040010137
    Abstract: The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C2 and/or C3 as well as at position C6 of the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrous material whose primary and secondary hydroxyl groups of the cellulose are oxidized into aldehyde groups at least in part by means of TEMPO oxidation and periodate oxidation.
    Type: Application
    Filed: May 14, 2003
    Publication date: January 15, 2004
    Applicant: SCA HYGIENE PRODUCTS GMBH
    Inventors: Thomas Jaschinski, Susanna Gunnars, Arie Cornelis Besemer, Petter Bragd
  • Patent number: 6635755
    Abstract: The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C2 and/or C3 as well as at position C6 of the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrous material whose primary and secondary hydroxyl groups of the cellulose are oxidized into aldehyde groups at least in part by means of TEMPO oxidation and periodate oxidation. The invention also concerns a paper or nonwoven comprising the above polysaccharide. According to the invention a relative wet strength of more than 10% can be achieved.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: October 21, 2003
    Assignee: SCA Hygiene Products GmbH
    Inventors: Thomas Jaschinski, Susanna Gunnars, Arie Cornelis Besemer, Petter Bragd
  • Publication number: 20030131958
    Abstract: A treatment sequence includes ozonation under acidic conditions followed by an acidic wash for enhancing the wet strength of a cellulosic fibrous material. Preferably the ozone treatment and the acidic wash are followed by a second ozonation step under acidic conditions. The fibrous cellulosic material obtained by this treatment sequence has a breaking length of at least 100 m. The wet strength of the cellulosic fibrous material is increased without the use of additives, such as wet strength agents. This use of ozone is very simple and efficient, and leads to highly pure products. The use of ozone as the only treatment chemical in particular avoids the introduction of so-called “non-process elements” (NPE) into the treatment system, for instance metal oxides such as MgO, which are frequently used in the oxidative treatment of pulps.
    Type: Application
    Filed: November 27, 2002
    Publication date: July 17, 2003
    Inventor: Thomas Jaschinski
  • Publication number: 20020098317
    Abstract: The present invention relates to a cellulose-containing fibrous material, wherein hydroxy groups were oxidized at the C(6) of glucose units of the cellulose into aldehyde and/or carboxy groups, a paper or nonwoven (product) made therefrom, in particular tissue (products) a process for their manufacture. The paper or nonwoven (products) of the invention display excellent strength properties.
    Type: Application
    Filed: August 16, 2001
    Publication date: July 25, 2002
    Inventors: Thomas Jaschinski, Susanna Gunnars, Arie Cornelis Besemer, Petter Bragd, Jan Matthijs Jetten, Ronald Van Den Dool, Willem Van Hartingsveldt
  • Patent number: 6409881
    Abstract: The present invention relates to crosslinked cellulose-containing fibrous material, wherein hydroxy groups are oxidized at the C(6) of glucose units of the cellulose into aldehyde and/or carboxy groups crosslinked with a metal-containing crosslinking agent selected from transition metals of groups of IVa (preferably Zr), Va, VIa, VIIa and VIIIa, aluminum and zinc; and a paper or nonwoven (product), e.g. tissue (product), which comprises this fibrous material. These paper or nonwoven (products) are distinguished by high wet and dry strength.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: June 25, 2002
    Assignee: SCA Hygiene Products GmbH
    Inventor: Thomas Jaschinski
  • Patent number: 6136041
    Abstract: A method of bleaching lignocellulosic fibers is disclosed which comprises the step of treating the lignocellulosic fibers with a bleaching composition comprising at least one oxidizing bleaching agent in aqueous solution in the presence of at least one additive which activates delignification or bleaching wherein the activating additive is a phenanthroline selected from the group consisting of 2,9-dimethyl-1,10-phenanthroline, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline-disulfonic acid-disodium salt-hydrate, and 3,4,7,8-tetramethyl-1,10-phenanthroline.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: October 24, 2000
    Inventors: Thomas Jaschinski, Rudolf Patt