Patents Assigned to TRIOPLAST AB
  • Patent number: 11383501
    Abstract: A prestretched polyethylene film is provided having a longitudinal degree of prestretching in the range of from 100% to 400% and a remaining longitudinal elongation capability in the range of from 100% to less than 300% as determined according to ASTM D882. The film comprises at least 25% by weight of a linear low density polyethylene (LLDPE) substantially free from long chain branching (LCB) and having a density below 915 kg/m3. The film is particularly useful as a net replacement film in the baling of compressed bulk material, such as silage, and may offer to users improved flexibility and reliability and/or increased yield.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: July 12, 2022
    Assignee: Trioplast AB
    Inventor: Robert Mattsson
  • Patent number: 11225011
    Abstract: The present invention relates to a prestretched polyethylene film having a longitudinal stretch ratio of from about 1:2 to about 1:4 and having a longitudinal elongation capability of at least 170%, said elongation capability comprising an elastic component. The invention also relates to a method for producing said film and to a method of wrapping compressed bulk material such as a round bale using said film, the method comprising further stretching the prestretched film and applying the film around the compressed bulk material in direct contact therewith. The film according to the invention may be used as a net replacement film and allows increasing the efficiency and the economics in the baling process by allowing faster baling, use of a lesser amount of wrapping film and/or improved protection of the product.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: January 18, 2022
    Assignee: Trioplast AB
    Inventors: Lars Ohrn, Inger Bystrom, Torbjorn Runesson, Andreas Lindberg
  • Patent number: 10364077
    Abstract: The present disclosure relates to a protective wrapping for a cylindrical object, comprising: an essentially square plastic film sheet, having a length exceeding the length of the circumference of the cylindrical object to be wrapped and a width exceeding the width of the cylindrical object to be wrapped, and having an inner face and an outer face referring to the orientation of the film when wrapped; the plastic film sheet comprising two foamed plastic strips arranged on the inner or outer face thereof, the strips arranged essentially parallel in the length direction of the plastic film sheet, at a distance from each other such that the foamed plastic strips can cover and protect the edges of the cylindrical object when wrapped. The present disclosure further relates to the use of the protective wrapping for wrapping a cylindrical object, particularly a reel of plastic film for baling applications.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: July 30, 2019
    Assignee: TRIOPLAST AB
    Inventors: Andreas Lindberg, Anders Larsson
  • Patent number: 10299438
    Abstract: A forming and wrapping unit and method for forming material into a continuous bar and wrapping the material. The unit including a forming chamber for forming material into a continuous bar, a sheet wrapping device for wrapping the continuous bar, and a controller operating on the sheet wrapping device. The sheet wrapping device and the controller are adapted to be operable independently of a rate of feeding bulk material into the forming chamber. The method includes feeding material to a wrapping position while forming the material, wrapping a sheet around the material such that the sheet at least partly overlaps a previously wrapped portion of the sheet, and transferring the wrapped material from the wrapping position to a storage ready position. The feeding of the material to a wrapping position and wrapping a sheet around the material are separately operable.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: May 28, 2019
    Assignee: TRIOPLAST AB
    Inventors: Lars Öhrn, Mikael Liljegren
  • Publication number: 20190001649
    Abstract: A prestretched polyethylene film having a longitudinal degree of pre-stretching above 70% and a remaining longitudinal elongation capability of at least 300% as determined according to ASTM D882, wherein said film is a coextruded blown film comprising at least one core layer arranged between two exterior layers, wherein the thickness of the film is in the range of 10-30 ?m, and wherein the film comprises at least 25% by weight of a linear low density polyethylene (LLDPE) substantially free from long chain branching (LCB) produced using a Ziegler Natta catalyst and hexene, heptene or octene as comonomer and having a density of between 910 and 915 kg/m3. Use of the prestretched polyethylene film as an agricultural balewrap film or silage film, pallet wrapping film, or waste wrap film.
    Type: Application
    Filed: December 21, 2016
    Publication date: January 3, 2019
    Applicant: TRIOPLAST AB
    Inventor: Robert MATTSSON
  • Publication number: 20180215089
    Abstract: The present invention relates to a prestretched polyethylene film having a longitudinal stretch ratio of from about 1:2 to about 1:4 and having a longitudinal elongation capability of at least 170%, said elongation capability comprising an elastic component. The invention also relates to a method for producing said film and to a method of wrapping compressed bulk material such as a round bale using said film, the method comprising further stretching the prestretched film and applying the film around the compressed bulk material in direct contact therewith. The film according to the invention may be used as a net replacement film and allows increasing the efficiency and the economics in the baling process by allowing faster baling, use of a lesser amount of wrapping film and/or improved protection of the product.
    Type: Application
    Filed: March 28, 2018
    Publication date: August 2, 2018
    Applicant: TRIOPLAST AB
    Inventors: Lars OHRN, Inger Bystrom, Torbjorn Runesson, Andreas Lindberg
  • Publication number: 20180186532
    Abstract: The present disclosure relates to a protective wrapping for a cylindrical object, comprising: an essentially square plastic film sheet, having a length exceeding the length of the circumference of the cylindrical object to be wrapped and a width exceeding the width of the cylindrical object to be wrapped, and having an inner face and an outer face referring to the orientation of the film when wrapped; the plastic film sheet comprising two foamed plastic strips arranged on the inner or outer face thereof, the strips arranged essentially parallel in the length direction of the plastic film sheet, at a distance from each other such that the foamed plastic strips can cover and protect the edges of the cylindrical object when wrapped. The present disclosure further relates to the use of the protective wrapping for wrapping a cylindrical object, particularly a reel of plastic film for baling applications.
    Type: Application
    Filed: June 20, 2016
    Publication date: July 5, 2018
    Applicant: TRIOPLAST AB
    Inventors: Andreas LINDBERG, Anders LARSSON
  • Publication number: 20130104503
    Abstract: The invention provides a forming and wrapping unit (2) for forming material into a continuous bar (20) and wrapping said material the unit comprising: a forming chamber (6) for forming material into a continuous bar; sheet wrapping means (4) for wrapping said continuous bar; and control means operating on said sheet wrapping means, wherein said sheet wrapping means and said control means are adapted to be operable independently of a rate of feeding bulk material into the forming chamber. The invention also relates to a method for forming and wrapping material into a continuous bar, comprising feeding said material to a wrapping position while forming said material; wrapping sheet around said material such that said sheet at least partly overlaps a previously wrapped round of sheet; and transferring the wrapped material from said wrapping position to a storage ready position. The step of feeding the material to a wrapping position and said step of wrapping sheet around the material are separately operable.
    Type: Application
    Filed: June 23, 2011
    Publication date: May 2, 2013
    Applicant: TRIOPLAST AB
    Inventors: Lars Öhrn, Mikael Liljegren
  • Publication number: 20130032046
    Abstract: The present invention relates to a prestretched polyethylene film having a longitudinal stretch ratio of from about 1:2 to about 1:4 and having a longitudinal elongation capability of at least 170%, said elongation capability comprising an elastic component. The invention also relates to a method for producing said film and to a method of wrapping compressed bulk material such as a round bale using said film, the method comprising further stretching the prestretched film and applying the film around the compressed bulk material in direct contact therewith. The film according to the invention may be used as a net replacement film and allows increasing the efficiency and the economics in the baling process by allowing faster baling, use of a lesser amount of wrapping film and/or improved protection of the product.
    Type: Application
    Filed: December 17, 2010
    Publication date: February 7, 2013
    Applicant: TRIOPLAST AB
    Inventors: Lars Öhrn, Inger Byström, Torbjörn Runesson, Andreas Lindberg