Patents by Inventor Frank Peng

Frank Peng 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).

  • Patent number: 12053964
    Abstract: The invention relates to a ply of a linerboard for corrugated board, which ply exhibits high strength properties and which enables the production of lightweight linerboards. The ply of the invention comprises 20-80 wt % CTMP from wood fibers and 80-20 wt % chemical pulp, calculated on the total fiber weight of said ply and strength additives chosen from the group of microfibrillated cellulose (MFC), anionic or cationic polymers and starch or combinations thereof. The ply exhibits a geometric SCT index of above 22 Nm/g and a density of below 680 kg/m3, preferably of below 650 kg/m3.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: August 6, 2024
    Assignee: Stora Enso OYJ
    Inventors: Seppo Lampainen, Frank Peng, Atso Laakso, Ari-Pekka Määttänen
  • Patent number: 11952718
    Abstract: The invention discloses a paperboard comprising a base ply, a top ply, and an intermediate layer disposed in-between the at least one base ply and the top ply. The intermediate layer comprises pigment and microfibrillated cellulose (MFC). The application of an intermediate layer comprising pigment and MFC in-between the base ply and the top ply gives rise to improved optical properties of the paperboard, even when using an uncoated top ply having a low grammage This makes it possible to reduce the grammage of the top ply and still obtain good optical properties.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: April 9, 2024
    Assignee: Stora Enso OYJ
    Inventors: Frank Peng, Kaj Backfolk, Isto Heiskanen, Teija Laukala
  • Patent number: 11926128
    Abstract: The invention relates to a lightweight linerboard for corrugated board with good strength properties and which reduces problems with washboarding in the thereof produced corrugated board. The linerboard of the invention comprises at least one ply comprising 20-80 wt % CTMP from wood fibers and 20-80 wt % chemical pulp, all percentages calculated on the total fiber weight of said first ply, wherein the CTMP exhibits a bulk of at least 2.5 cm3/g.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: March 12, 2024
    Assignee: Stora Enso OYJ
    Inventors: Seppo Lampainen, Frank Peng, Atso Laakso, Ari-Pekka Määttänen
  • Publication number: 20220178082
    Abstract: The invention discloses a method for producing a three dimensional molded product from cellulose fibers, comprising the steps of: providing a cellulose fiber composition comprising 1-30 wt % lignin, said cellulose fiber composition further having a solid content between 0.1-95%; providing a forming tool having a three dimensional shape including a forming surface, and bringing said forming surface into contact with the cellulose fiber composition; and press drying the cellulose fiber composition contacted by the forming tool at temperatures>200° C. to a dry content of at least 70%. The invention also relates to a three dimensional fiber based product obtainable by means of said method.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 9, 2022
    Applicant: Stora Enso OYJ
    Inventors: Sohrab Kazemahvazi, Ulla Jansson, Irene Wedin, Frank Peng
  • Publication number: 20220074144
    Abstract: The invention discloses a paperboard comprising a base ply, a top ply, and an intermediate layer disposed in-between the at least one base ply and the top ply. The intermediate layer comprises pigment and microfibrillated cellulose (MFC). The application of an intermediate layer comprising pigment and MFC in-between the base ply and the top ply gives rise to improved optical properties of the paperboard, even when using an uncoated top ply having a low grammage. This makes it possible to reduce the grammage of top ply and still obtain good optical properties.
    Type: Application
    Filed: January 23, 2020
    Publication date: March 10, 2022
    Applicant: Stora Enso OYJ
    Inventors: Frank Peng, Kaj Backfolk, Isto Heiskanen, Teija Laukala
  • Publication number: 20210268783
    Abstract: The invention relates to a lightweight linerboard for corrugated board with good strength properties and which reduces problems with washboarding in the thereof produced corrugated board. The linerboard of the invention comprises at least one ply comprising 20-80 wt % CTMP from wood fibers and 20-80 wt % chemical pulp, all percentages calculated on the total fiber weight of said first ply, wherein the CTMP exhibits a bulk of at least 2.5 cm3/g.
    Type: Application
    Filed: June 25, 2019
    Publication date: September 2, 2021
    Applicant: Stora Enso OYJ
    Inventors: Seppo Lampainen, Frank Peng, Atso Laakso, Ari-Pekka Määttänen
  • Publication number: 20210221114
    Abstract: The invention relates to a ply of a linerboard for corrugated board, which ply exhibits high strength properties and which enables the production of lightweight linerboards. The ply of the invention comprises 20-80 wt % CTMP from wood fibers and 80-20 wt % chemical pulp, calculated on the total fiber weight of said ply and strength additives chosen from the group of microfibrillated cellulose (MFC), anionic or cationic polymers and starchor combinations thereof. The ply exhibits a geometric SCT index of above 22 Nm/g and a density of below 680 kg/m3, preferably of below 650 kg/m3.
    Type: Application
    Filed: June 25, 2019
    Publication date: July 22, 2021
    Applicant: Stora Enso OYJ
    Inventors: Seppo Lampainen, Frank Peng, Atso Laakso, Ari-Pekka Määttänen
  • Patent number: 10145068
    Abstract: The present invention relates to a process for producing at least one ply of a paper or board product wherein a web comprising mechanical and/or chemimechanical pulp and at least one dry strength additive is dried in a press drying process by subjecting the web to heat and an overpressure of above 40 kPa. The present invention also relates to a paper product, a paperboard product and a ply produced according to the process.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: December 4, 2018
    Assignee: Stora Enso OYJ
    Inventors: Hallgren Hans, Frank Peng, Anders Moberg, Hans Höglund, Gunilla Pettersson, Sven Norgren
  • Publication number: 20170051456
    Abstract: The present invention relates to a process for producing at least one ply of a paper or board product wherein a web comprising mechanical and/or chemimechanical pulp and at least one dry strength additive is dried in a press drying process by subjecting the web to heat and an overpressure of above 40 kPa. The present invention also relates to a paper product, a paperboard product and a ply produced according to the process.
    Type: Application
    Filed: April 29, 2015
    Publication date: February 23, 2017
    Inventors: Hallgren HANS, Frank PENG, Anders MOBERG, Hans HOGLUND, Gunilla PETTERSSON, Sven NORGREN
  • Patent number: 7897011
    Abstract: The invention relates to a high quality paperboard comprising at least two plies, a first ply having good surface properties and strength, and a second ply for providing the paperboard with bulk wherein the second ply comprises hardwood CTMP. This paperboard has an internal strength and a bending resistance that is comparable with conventional high quality paperboard based on softwood CTMP. The invention also relates to products manufactured of the paperboard.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: March 1, 2011
    Assignee: Stora Enso AB
    Inventors: Frank Peng, Isto Heiskanen, Mika Riikonen
  • Publication number: 20080314536
    Abstract: The invention relates to a high quality paperboard comprising at least two plies, a first ply having good surface properties and strength, and a second ply for providing the paperboard with bulk wherein the second ply comprises hardwood CTMP. This paperboard has an internal strength and a bending resistance that is comparable with conventional high quality paperboard based on softwood CTMP. The invention also relates to products manufactured of the paperboard.
    Type: Application
    Filed: February 9, 2006
    Publication date: December 25, 2008
    Inventors: Frank Peng, Isto Heiskanen, Mika Riikonen
  • Patent number: 7005034
    Abstract: A method in connection with the production of mechanical pulp from a cellulose containing material wherein the material is processed in at least one refining step to produce pulp. According to the invention, the pulp is fractionated (4), after a first refining step (1), in order to separate primary fines (5) from the pulp. The invention also relates to a mechanical pulp, produced by the method, and to a paperboard, which at least partly consists of such mechanical pulp.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: February 28, 2006
    Inventors: Anders Moberg, Frank Peng, Mats Fredlund
  • Publication number: 20050241785
    Abstract: A method of producing mechanical pulp, comprising impregnation of fiber material with an enzyme-containing aqueous liquid prior to defibration and refining of the fiber material to produce a mechanical pulp. According to the invention, said enzyme-containing aqueous liquid is a pectinase-containing aqueous liquid. The invention is also related to the mechanical pulp thus produced.
    Type: Application
    Filed: August 21, 2003
    Publication date: November 3, 2005
    Inventors: Frank Peng, Rita Ferritsius, Ulf Angsas
  • Patent number: 6517680
    Abstract: Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke; and conveying at least one fiber fraction obtained thereby to a given ply in the paper or cardboard. In this way the fractionating is controlled so that the fiber composition in the fiber fraction obtained corresponds to a fiber composition in the input paper pulp for the given ply.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: February 11, 2003
    Assignee: Stora Kopparbergs Bergslags Aktiebolag (publ)
    Inventors: Mats Fredlund, Anders Moberg, Frank Peng, Fredrik Werner