Patents by Inventor Jan Lif

Jan Lif 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).

  • Process for production of film comprising microfibrillated cellulose
    Patent number: 11834793
    Abstract: The present invention relates to a process for manufacturing a film comprising high amounts of microfibrillated cellulose (MFC), having haptic properties. According to the present invention, a wet web comprising MFC is formed, followed by addition of particles having an average diameter of at least 1 ?m to the wet web, followed by dewatering and/or drying. The wet web may be formed for example by wet laid or cast forming methods. The particles may be added to the wet web for example by cast coating or spraying.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: December 5, 2023
    Assignee: Stora Enso OYJ
    Inventors: Kaj Backfolk, Isto Heiskanen, Esa Saukkonen, Jukka Kankkunen, Anna Nyberg Zetterlund, Jan Lif
  • PROCESS FOR PRODUCTION OF FILM COMPRISING MICROFIBRILLATED CELLULOSE
    Publication number: 20210054570
    Abstract: The present invention relates to a process for manufacturing a film comprising high amounts of microfibrillated cellulose (MFC), having haptic properties. According to the present invention, a wet web comprising MFC is formed, followed by addition of particles having an average diameter of at least 1 ?m to the wet web, followed by dewatering and/or drying. The wet web may be formed for example by wet laid or cast forming methods. The particles may be added to the wet web for example by cast coating or spraying.
    Type: Application
    Filed: January 31, 2019
    Publication date: February 25, 2021
    Applicant: Stora Enso OYJ
    Inventors: Kaj Backfolk, Isto Heiskanen, Esa Saukkonen, Jukka Kankkunen, Anna Nyberg Zetterlund, Jan Lif
  • Method and a system for monitoring structural changes of a fiber web
    Patent number: 7942057
    Abstract: A method for monitoring the structural state of a fiber web (1) that is being processed by a fiber web processing machine comprising a fiber web processing station (2) is described. The method comprises the steps of arranging a generator (5) and a detector (6) of a generator-detector unit (4) on opposite sides of the traveling fiber web (1) downstream of the fiber web processing station; bringing the generator to emit an ultrasonic wave; bringing the detector to receive the ultrasonic wave; sending a signal representing the received ultrasonic wave to a control unit (10); and, in the control unit, analyzing the signal and extracting a value from the signal representing a measure of the received ultrasonic wave. A system for monitoring the structural state of a fiber web is also described.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 17, 2011
    Assignee: Stora Enso AB
    Inventors: Thorulf Pettersson, Jan Lif, Magnus Björklund, Susanne Lindh
  • METHOD AND A SYSTEM FOR MONITORING STRUCTURAL CHANGES OF A FIBER WEB
    Publication number: 20090120190
    Abstract: A method for monitoring the structural state of a fiber web (1) that is being processed by a fiber web processing machine comprising a fiber web processing station (2) is described. The method comprises the steps of arranging a generator (5) and a detector (6) of a generator-detector unit (4) on opposite sides of the traveling fiber web (1) downstream of the fiber web processing station; bringing the generator to emit an ultrasonic wave; bringing the detector to receive the ultrasonic wave; sending a signal representing the received ultrasonic wave to a control unit (10); and, in the control unit, analyzing the signal and extracting a value from the signal representing a measure of the received ultrasonic wave. A system for monitoring the structural state of a fiber web is also described.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 14, 2009
    Inventors: Thorulf Pettersson, Jan Lif, Magnus Bjorklund, Susanne Lindh